Patent US2544631A successfully refreshed from Google Patents.
US2544631A
Expired / Lapsed
US
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Retaining ring assembly
Assignee: Waldes Kohinoor Inc
•
Filing: 1946-12-11
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Granted: 1951-03-06
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Expires: 1966-12-11
Abstract
No abstract record available.
Inventors
- 👤 Heimann Heinrich
- 👤 Brozek Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:21
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/16; F16B21/18; F16C; F16C35/00; F16C35/04; F16C35/06; F16C35/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US955160A
Cited
US1752982A
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US2133445A
Cited
CH233427A
Cited
US2379053A
Cited
US2416852A
Cited
US2413591A
Cited
US2382947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |