US2685964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine contained with external
Assignee: —
•
Filing: —
•
Granted: 1954-08-10
•
Expires: 1971-08-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:56
CPC Classifications
F; F02; F02C; F02C7/00; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1468869A
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GB221007A
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US1727609A
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GB307154A
Cited
US2225242A
Cited
FR849261A
Cited
US2271260A
Cited
US2194459A
Cited
US2351427A
Cited
US2356093A
Cited
US2549906A
Cited
US2494170A
Cited
US2469156A
Cited
US2549907A
Cited
US2594586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |