US2644309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for controlling the movements of hydraulically operated pistons
Assignee: Individual
•
Filing: 1951-09-10
•
Granted: 1953-07-07
•
Expires: 1971-09-10
Abstract
No abstract record available.
Inventors
- 👤 Detrez Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:54
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/20; F15B11/205; B; B08; B08B; B08B9/00; B08B9/08; B08B9/20; B08B9/42; B08B9/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1817552A
Cited
US2054296A
Cited
US2184057A
Cited
US2209608A
Cited
US2307544A
Cited
US2371893A
Cited
US2397106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |