Krupp Stahl AG
Krupp StahActive Patents
0
Total Holdings
32
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| DE736730C | Storage of a prism telescope on a tank stand | Expired / Lapsed | 1939-08-29 | 1943-06-25 | 0 | Details |
| DE699743C | Device for pumping water with forced flow evaporators | Expired / Lapsed | 1937-04-06 | 1940-12-05 | 0 | Details |
| US1991143A | Production of finely divided magnetic bodies | Expired / Lapsed | 1933-12-05 | 1935-02-12 | 0 | Details |
| US1956233A | Tipped tool and working implement | Expired / Lapsed | 1932-08-22 | 1934-04-24 | 0 | Details |
| DE594367C | Device for corrugating sub-chambers for water tube boilers | Expired / Lapsed | 1932-10-02 | 1934-03-16 | 0 | Details |
| US1895959A | Hard alloys | Expired / Lapsed | 1931-04-09 | 1933-01-31 | 0 | Details |
| FR724777A | Alternating current locomotive with polyphase motors and wi… | Expired / Lapsed | 1931-10-20 | 1932-05-02 | 0 | Details |
| US1759558A | Variable-speed gear | Expired / Lapsed | 1929-03-26 | 1930-05-20 | 0 | Details |
| US1724202A | Variable-speed gear | Expired / Lapsed | 1927-09-30 | 1929-08-13 | 0 | Details |
| US1664535A | Method of testing taper holes | Expired / Lapsed | 1926-01-04 | 1928-04-03 | 0 | Details |
| US1561389A | Reflex oven | Expired / Lapsed | 1924-02-07 | 1925-11-10 | 0 | Details |
| US1532794A | Fire-control apparatus for naval guns | Expired / Lapsed | 1924-03-13 | 1925-04-07 | 0 | Details |
| US1487554A | Process for hardening steel alloys | Expired / Lapsed | 1921-10-26 | 1924-03-18 | 0 | Details |
| US1465295A | Caliper gauge | Expired / Lapsed | 1921-11-09 | 1923-08-21 | 0 | Details |
| US1451736A | Internal gauge | Expired / Lapsed | 1921-11-29 | 1923-04-17 | 0 | Details |
| DE370528C | Buffers with woodruff springs | Expired / Lapsed | — | 1923-03-03 | 0 | Details |
| US1434209A | Arrangement for the determination of the direction of the a… | Expired / Lapsed | 1920-09-03 | 1922-10-31 | 0 | Details |
| US1420951A | Hole gauge | Expired / Lapsed | 1920-11-06 | 1922-06-27 | 0 | Details |
| US1418952A | Controlling apparatus for piston pumps | Expired / Lapsed | 1920-10-04 | 1922-06-06 | 0 | Details |
| US1408418A | Electrode with cooled metallic head | Expired / Lapsed | 1913-08-25 | 1922-02-28 | 0 | Details |
| US1405722A | Typewriter mechanism | Expired / Lapsed | 1921-02-14 | 1922-02-07 | 0 | Details |
| US1404425A | Surface gauge | Expired / Lapsed | 1920-11-06 | 1922-01-24 | 0 | Details |
| US1398435A | Printing device for registering cash and the like | Expired / Lapsed | 1921-02-09 | 1921-11-29 | 0 | Details |
| US1394520A | Apparatus for the electrical long-distance control of the v… | Expired / Lapsed | 1920-11-19 | 1921-10-25 | 0 | Details |
| US1390471A | Gyroscopic stabilizer | Expired / Lapsed | 1920-09-03 | 1921-09-13 | 0 | Details |
| US1384005A | Fire-direction apparatus for naval guns | Expired / Lapsed | 1920-10-23 | 1921-07-05 | 0 | Details |
| US1375269A | Apparatus for the electrical long-distance control of the v… | Expired / Lapsed | 1920-09-03 | 1921-04-19 | 0 | Details |
| US1375437A | Long-distance signal and control system | Expired / Lapsed | 1920-09-03 | 1921-04-19 | 0 | Details |
| US1179417A | Ammunition-box with yielding bearings. | Expired / Lapsed | 1914-02-18 | 1916-04-18 | 0 | Details |
| US1166034A | Electrical apparatus for transmitting signals. | Expired / Lapsed | 1915-03-09 | 1915-12-28 | 0 | Details |
| US993883A | Attachment of thin-walled hollow bodies to plates. | Expired / Lapsed | 1911-01-21 | 1911-05-30 | 0 | Details |
| FR336272A | Manufacturing process of steel sheathed and small caliber p… | Expired / Lapsed | 1903-10-27 | 1904-03-04 | 0 | Details |