Patent US2487802A successfully refreshed from Google Patents.
US2487802A
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US
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Retaining ring assembly
Assignee: Waldes Kohinoor Inc
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Filing: 1944-11-08
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Granted: 1949-11-15
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Expires: 1964-11-08
Abstract
No abstract record available.
Inventors
- 👤 Heimann Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:12
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/16; F16B21/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US176743A
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US216512A
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US454289A
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DE463684C
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USRE18144E
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DE540229C
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US1875209A
Cited
GB481970A
Cited
US2322138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |