Patent US2635640A successfully refreshed from Google Patents.
US2635640A
Expired / Lapsed
US
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Diaphragm mounting
Assignee: Motors Liquidation Co
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Filing: 1948-02-12
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Granted: 1953-04-21
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Expires: 1968-02-12
Abstract
No abstract record available.
Inventors
- 👤 James H Nellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:33
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1978362A
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US2123829A
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US2238271A
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US2237530A
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US2402354A
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US2347185A
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US2385434A
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US2295427A
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US2289020A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |