Patent US2691283A successfully refreshed from Google Patents.
US2691283A
Expired / Lapsed
US
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Propeller shaft assembly and coupling structure
Assignee: IDA J EISENHAUER
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Filing: 1952-10-20
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Granted: 1954-10-12
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Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Ancil C Stover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:50
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/76; F16D3/16; F16D3/26; F16D3/38; F16D3/382; F16D3/387; F16F; F16F15/00; F16F15/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2394405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |