US2637986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible shaft coupling
Assignee: Aerojet Rocketdyne Holdings Inc
•
Filing: 1951-01-10
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Granted: 1953-05-12
•
Expires: 1971-01-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert Iredell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:22
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/76; F16D3/72; F16D3/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB207400A
Cited
US1772915A
Cited
US1871963A
Cited
US1983094A
Cited
US2084761A
Cited
US2295316A
Cited
US2562359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |