Patent US2978903A successfully refreshed from Google Patents.
US2978903A
Expired / Lapsed
US
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Torque transmission coupling
Assignee: BX Plastics Ltd
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Filing: 1957-03-20
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Granted: 1961-04-11
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Expires: 1977-03-20
Abstract
No abstract record available.
Inventors
- 👤 Nicholas Donald Cameron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:37
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/80; F16H; F16H35/00; F16H35/10; G; G05; G05G; G05G15/00; G05G15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1755287A
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US1685297A
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US1913194A
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US2270148A
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US2597514A
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US2580395A
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US2593000A
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US2709071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |