US2532422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic ram and sealing rings
Assignee: Individual
•
Filing: 1946-10-02
•
Granted: 1950-12-05
•
Expires: 1966-10-02
Abstract
No abstract record available.
Inventors
- 👤 Walter B Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:14
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/324
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1685081A
Cited
US1215445A
Cited
US1651131A
Cited
US1771890A
Cited
US1868668A
Cited
US2145384A
Cited
US2307067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |