US2951696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary spring attachment
Assignee: Individual
•
Filing: 1957-10-18
•
Granted: 1960-09-06
•
Expires: 1977-10-18
Abstract
No abstract record available.
Inventors
- 👤 Lenet Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:10
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/18; F16F1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB224378A
Cited
US1733364A
Cited
US1683075A
Cited
US1952958A
Cited
US2201531A
Cited
US2301398A
Cited
US2580975A
Cited
US2815945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |