Patent US3475923A successfully refreshed from Google Patents.
US3475923A
Expired / Lapsed
US
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Rotary couplings
Assignee: FABRIC BEARINGS Ltd
•
Filing: 1967-11-27
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Granted: 1969-11-04
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Expires: 1987-11-27
Abstract
No abstract record available.
Inventors
- 👤 Iain S Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:20
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/52; B; B21; B21B; B21B35/00; B21B35/14; F16D3/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733580A
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US1353677A
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US1849174A
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FR690228A
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US2025824A
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US2200641A
Cited
US2737033A
Cited
US2924082A
Cited
US2893224A
Cited
US3246483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |