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Patent US2938405A successfully refreshed from Google Patents.
US2938405A
Expired / Lapsed
US
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Auxiliary knob fastener for cranks
Assignee: Individual
•
Filing: 1958-01-17
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Granted: 1960-05-31
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Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Charles D West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:06
CPC Classifications
G; G05; G05G; G05G1/00; G05G1/08; G05G1/085; Y; Y10; Y10T; Y10T403/00; Y10T403/71; Y10T403/7123; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20744
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1911916A
Cited
USRE22543E
Cited
US2290807A
Cited
US2345685A
Cited
US2496700A
Cited
US2528675A
Cited
US2621947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |