Doosan Bobcat North America Inc
Doosan BobActive Patents
0
Total Holdings
56
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4148231A | Automatic transmission control | Expired / Lapsed | 1977-04-25 | 1979-04-10 | 32 | Details |
| US3991846A | Power steering system | Expired / Lapsed | 1975-08-07 | 1976-11-16 | 13 | Details |
| US3937294A | Operator hand control for industrial lift trucks | Expired / Lapsed | 1974-09-26 | 1976-02-10 | 20 | Details |
| US3889618A | Rolling apparatus | Expired / Lapsed | 1974-06-26 | 1975-06-17 | 12 | Details |
| US3841423A | Hydrostatic propulsion system | Expired / Lapsed | 1973-10-15 | 1974-10-15 | 36 | Details |
| US3742783A | Limited-slip type differential with adjusting means | Expired / Lapsed | 1971-07-29 | 1973-07-03 | 17 | Details |
| US3691398A | Station address and control system for material handling ve… | Expired / Lapsed | 1970-06-15 | 1972-09-12 | 18 | Details |
| US3666034A | Hydrostatic vehicle{13 four-wheel drive, four-wheel steering | Expired / Lapsed | 1969-10-24 | 1972-05-30 | 13 | Details |
| US3646890A | Means for controlling automatically moved vehicle | Expired / Lapsed | 1969-11-28 | 1972-03-07 | 35 | Details |
| US3575652A | Motor control circuit with semiconductor switching means an… | Expired / Lapsed | 1969-06-30 | 1971-04-20 | 20 | Details |
| US3556243A | Steering system | Expired / Lapsed | 1969-04-21 | 1971-01-19 | 4 | Details |
| US3536209A | Automatic material-unit storage and method | Expired / Lapsed | 1966-04-18 | 1970-10-27 | 0 | Details |
| US3455322A | Pressure compensated diverter valve | Expired / Lapsed | 1966-12-30 | 1969-07-15 | 0 | Details |
| US3419798A | Displacement sensing transducer using hall effect devices | Expired / Lapsed | 1965-12-17 | 1968-12-31 | 0 | Details |
| US3344688A | Limited slip differential | Expired / Lapsed | 1965-12-29 | 1967-10-03 | 2 | Details |
| US3334703A | Push-start circuit | Expired / Lapsed | 1965-06-07 | 1967-08-08 | 1 | Details |
| US3202253A | Clutch cooling means | Expired / Lapsed | 1961-12-04 | 1965-08-24 | 0 | Details |
| US3185245A | Steering mode selection and wheel synchronization system | Expired / Lapsed | 1962-12-31 | 1965-05-25 | 2 | Details |
| US3179198A | Industrial truck | Expired / Lapsed | 1961-12-26 | 1965-04-20 | 2 | Details |
| US3156191A | Sealing means for pumps and motors | Expired / Lapsed | 1960-12-23 | 1964-11-10 | 2 | Details |
| US3151694A | Steering arrangement and hydrostatic drive for articulated … | Expired / Lapsed | 1961-05-11 | 1964-10-06 | 1 | Details |
| US3134063A | Plural battery and plural motor control system for industri… | Expired / Lapsed | 1961-12-26 | 1964-05-19 | 2 | Details |
| US3130646A | Adjustable cylinder end stop | Expired / Lapsed | 1962-03-12 | 1964-04-28 | 2 | Details |
| US3109524A | Power transmission mechanism | Expired / Lapsed | 1958-12-08 | 1963-11-05 | 2 | Details |
| US3098543A | Multi-purpose control means for industrial trucks and the l… | Expired / Lapsed | 1961-12-22 | 1963-07-23 | 2 | Details |
| US3083533A | Hydraulic system | Expired / Lapsed | 1960-10-24 | 1963-04-02 | 2 | Details |
| US3039576A | Fluid system for a windlass | Expired / Lapsed | 1959-12-30 | 1962-06-19 | 0 | Details |
| US2917143A | Inching valve control | Expired / Lapsed | 1958-10-13 | 1959-12-15 | 0 | Details |
| US2877906A | Load weighing device | Expired / Lapsed | 1954-02-08 | 1959-03-17 | 0 | Details |
| US2814371A | Inching valve | Expired / Lapsed | 1955-12-15 | 1957-11-26 | 0 | Details |
| US2786368A | Transmission control system | Expired / Lapsed | 1952-07-29 | 1957-03-26 | 0 | Details |
| US2706062A | Industrial truck | Expired / Lapsed | 1950-11-04 | 1955-04-12 | 0 | Details |
| US2658403A | Control system for transmissions | Expired / Lapsed | 1950-11-13 | 1953-11-10 | 0 | Details |
| US2647650A | Combination clamp and rotating mechanism | Expired / Lapsed | 1950-03-01 | 1953-08-04 | 0 | Details |
| US2616311A | Transmission | Expired / Lapsed | 1950-11-21 | 1952-11-04 | 0 | Details |
| US2611498A | Roll gripping and upending truck | Expired / Lapsed | 1947-04-17 | 1952-09-23 | 0 | Details |
| US2608885A | Transmission | Expired / Lapsed | 1948-02-09 | 1952-09-02 | 0 | Details |
| US2536151A | Material handling apparatus | Expired / Lapsed | 1946-02-25 | 1951-01-02 | 0 | Details |
| US2529393A | Fluid control means for auxiliary transmissions | Expired / Lapsed | 1946-09-28 | 1950-11-07 | 0 | Details |
| US2506346A | Pallet construction | Expired / Lapsed | 1946-01-25 | 1950-05-02 | 0 | Details |
| US2443720A | Drive means for vehicles | Expired / Lapsed | 1944-11-13 | 1948-06-22 | 0 | Details |
| US2368122A | Industrial truck | Expired / Lapsed | 1943-09-06 | 1945-01-30 | 0 | Details |
| US2368121A | Industrial truck | Expired / Lapsed | 1943-06-07 | 1945-01-30 | 0 | Details |
| US2344388A | Vehicle driving mechanism | Expired / Lapsed | 1940-03-07 | 1944-03-14 | 0 | Details |
| US2275120A | Air conditioning system for rail vehicles | Expired / Lapsed | 1938-06-30 | 1942-03-03 | 0 | Details |
| US2273336A | Axle housing | Expired / Lapsed | 1940-08-08 | 1942-02-17 | 0 | Details |
| US2266565A | Heat treatment of steel | Expired / Lapsed | 1938-09-19 | 1941-12-16 | 0 | Details |
| US2256320A | Transmission | Expired / Lapsed | 1940-02-19 | 1941-09-16 | 0 | Details |
| US2252158A | Gear shifting mechanism | Expired / Lapsed | 1937-11-08 | 1941-08-12 | 0 | Details |
| US2178369A | Industrial truck | Expired / Lapsed | 1938-03-12 | 1939-10-31 | 0 | Details |
| US2136697A | Shifting means for transmissions | Expired / Lapsed | 1936-04-17 | 1938-11-15 | 0 | Details |
| US2133112A | Differential | Expired / Lapsed | 1936-09-18 | 1938-10-11 | 0 | Details |
| US2085897A | Drive for rail cars | Expired / Lapsed | 1933-04-10 | 1937-07-06 | 0 | Details |
| US2054222A | Coaster device | Expired / Lapsed | 1931-01-31 | 1936-09-15 | 0 | Details |
| US2027442A | Transmission | Expired / Lapsed | 1933-05-29 | 1936-01-14 | 0 | Details |
| US1951876A | Snap lock mechanism for transmissions | Expired / Lapsed | 1931-09-14 | 1934-03-20 | 0 | Details |