US2959155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive piston for a fluid operated motor
Assignee: SPENAX Corp A CORP OF INDIANA
•
Filing: 1958-02-10
•
Granted: 1960-11-08
•
Expires: 1978-02-10
Abstract
No abstract record available.
Inventors
- 👤 Richard E Powers
- 👤 Charles W Weis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:21
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/04; B25C1/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1366151A
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US2713165A
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US2757685A
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US2820966A
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US2932030A
Cited
US2807021A
Cited
US2862475A
Cited
US2854953A
Cited
US2887686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |