Patent US2433759A successfully refreshed from Google Patents.
US2433759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston rod actuated valve for fluid motors of the expansible chamber type
Assignee: Trico Products Corp
•
Filing: 1944-06-17
•
Granted: 1947-12-30
•
Expires: 1964-06-17
Abstract
No abstract record available.
Inventors
- 👤 Willis C Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:08
CPC Classifications
F; F01; F01B; F01B17/00; F01B17/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US476359A
Cited
US549117A
Cited
US770324A
Cited
US953993A
Cited
US1506929A
Cited
US1534238A
Cited
US1910019A
Cited
US2103001A
Cited
US2310750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |