US1994989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic transmission
Assignee: Oilgear Co
•
Filing: 1931-05-09
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Granted: 1935-03-19
•
Expires: 1951-05-09
Abstract
No abstract record available.
Inventors
- 👤 Ferris Walter
- 👤 John P Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:10
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/08; F04B; F04B1/00; F04B1/04; F04B1/0404; F04B1/0439; F04B1/06; F04B1/07; F04B1/10; F04B1/107; F04B1/1071; F04B1/1072; F04B23/00; F04B23/04; F04B23/08; F04B23/10; F04B23/103; F04B49/00; F04B49/08; F04B49/12; F04B49/123; F04B49/128; F04B9/00; F04B9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-03-18 | 1938-09-17 | 1939-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-03-18 | 1942-09-17 | 1943-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-03-18 | 1946-09-17 | 1947-03-19 | $7700.00 | Window Closed / Lapsed |