Patent US2973751A successfully refreshed from Google Patents.
US2973751A
Expired / Lapsed
US
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Internal combustion engine
Assignee: General Electric Co
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Filing: 1956-12-14
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Granted: 1961-03-07
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Expires: 1976-12-14
Abstract
No abstract record available.
Inventors
- 👤 Richard H Blackmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:23
CPC Classifications
F; F02; F02B; F02B43/00; F02B43/08; F02B51/00; F02B51/02; F02B2275/00; F02B2275/22; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1343536A
Cited
US2746249A
Cited
US2499642A
Cited
US2862482A
Cited
US2673069A
Cited
US2791883A
Cited
US2775961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |