US3520389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch plates
Assignee: BBA Group Ltd
•
Filing: 1968-02-02
•
Granted: 1970-07-14
•
Expires: 1988-02-02
Abstract
No abstract record available.
Inventors
- 👤 Herbert Smales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:44
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1700493A
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US1992626A
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US1904953A
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US2146043A
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US2299028A
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US2392246A
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US2337134A
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US2337111A
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US2520350A
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US2888122A
Cited
US2916123A
Cited
US3164236A
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US3280949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |