US2448879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction clutch plate
Assignee: Borg Warner Corp
•
Filing: 1937-06-12
•
Granted: 1948-09-07
•
Expires: 1957-06-12
Abstract
No abstract record available.
Inventors
- 👤 David E Gamble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:03
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D2013/642
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1656778A
Cited
US1685983A
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US1777399A
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US1942029A
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US1899872A
Cited
US2059158A
Cited
US1992626A
Cited
US1971665A
Cited
US2027650A
Cited
US2324913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |