US2635519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control system
Assignee: Individual
•
Filing: 1947-05-09
•
Granted: 1953-04-21
•
Expires: 1967-05-09
Abstract
No abstract record available.
Inventors
- 👤 Cook Einar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/24; A01B63/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1223741A
Cited
US1704339A
Cited
US1525335A
Cited
US1718638A
Cited
US1931815A
Cited
US2071781A
Cited
US2237884A
Cited
US2337510A
Cited
US2303320A
Cited
US2337773A
Cited
US2394117A
Cited
US2363119A
Cited
US2407094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |