US2544805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism for hydraulic pumps
Assignee: Individual
•
Filing: 1947-01-08
•
Granted: 1951-03-13
•
Expires: 1967-01-08
Abstract
No abstract record available.
Inventors
- 👤 John S Pilch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:56
CPC Classifications
F; F04; F04B; F04B53/00; F04B49/00; F04B49/22; F04B49/24; F04B9/00; F04B9/02; F04B9/04; F04B9/042; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1099449A
Cited
US1783940A
Cited
US1904115A
Cited
US1889517A
Cited
US1898916A
Cited
US2007197A
Cited
US2099206A
Cited
US2243648A
Cited
US2311468A
Cited
US2323950A
Cited
US2299492A
Cited
US2348412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |