Patent US2997038A successfully refreshed from Google Patents.
US2997038A
Expired / Lapsed
US
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Crankcase access and explosion relief cover
Assignee: General Electric Co
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Filing: 1959-12-07
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Granted: 1961-08-22
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Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 William W Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:03
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/08; F02B77/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1564059A
Cited
US2373620A
Cited
US2436729A
Cited
US2509075A
Cited
US2724378A
Cited
GB735344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |