US2904974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller shaft assembly
Assignee: Individual
•
Filing: 1956-09-17
•
Granted: 1959-09-22
•
Expires: 1976-09-17
Abstract
No abstract record available.
Inventors
- 👤 Edward W Libby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:12
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/22; F; F16; F16F; F16F15/00; F16F15/10
Claims Analysis
Total Claims: 0
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US2652700A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |