US2425558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direction control device
Assignee: Individual
•
Filing: 1943-03-17
•
Granted: 1947-08-12
•
Expires: 1963-03-17
Abstract
No abstract record available.
Inventors
- 👤 Gerhard G Ohlendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:18
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR17540E
Cited
US1384868A
Cited
US1506785A
Cited
US1597416A
Cited
FR747286A
Cited
US2158180A
Cited
US2334503A
Cited
US2165800A
Cited
US2407936A
Cited
US2406293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |