Patent US2904974A successfully refreshed from Google Patents.
US2904974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller shaft assembly
Assignee: Individual
•
Filing: 1956-09-17
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Granted: 1959-09-22
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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 22:22
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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References Cited (Backward Citations)
US1397304A
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US1435355A
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US1627936A
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US1664713A
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US1784436A
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US2027329A
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US2067287A
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US2092291A
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US2162159A
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US2389562A
Cited
US2652700A
Cited
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 |