Patent US3964509A successfully refreshed from Google Patents.
US1650573A
Expired / Lapsed
US
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Self-locking drive collar
Assignee: Fafnir Bearing Co
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Filing: 1925-02-07
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Granted: 1927-11-22
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Expires: 1945-02-07
Abstract
No abstract record available.
Inventors
- 👤 Raymond R Searles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:26
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/16; F16B21/18; F16B21/186; F16C; F16C35/00; F16C35/04; F16C35/06; F16C35/063; F16B2200/00; F16B2200/40; F16B2200/406; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0847
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-11-21 | 1931-05-23 | 1931-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-11-21 | 1935-05-23 | 1935-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-11-21 | 1939-05-23 | 1939-11-22 | $7700.00 | Window Closed / Lapsed |