US2642844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch piston safety valve
Assignee: Borg Warner Corp
•
Filing: 1948-12-09
•
Granted: 1953-06-23
•
Expires: 1968-12-09
Abstract
No abstract record available.
Inventors
- 👤 George E Flinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:08
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/06; F16D25/062; F16D25/063; F16D25/0635; F16D25/0638; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/108; Y10T137/1135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE643678C
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US644749A
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DE402912C
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US2163203A
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US2120092A
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US2245857A
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US2178017A
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US2404822A
Cited
US2462657A
Cited
US2512360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |