Patent US2769305A successfully refreshed from Google Patents.
US2769305A
Expired / Lapsed
US
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Power plants comprising main and auxiliary engines
Assignee: Individual
•
Filing: 1949-01-06
•
Granted: 1956-11-06
•
Expires: 1969-01-06
Abstract
No abstract record available.
Inventors
- 👤 Chernowitz George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:26
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/74; F02K9/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2419866A
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US2398125A
Cited
US2501633A
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FR919275A
Cited
US2531761A
Cited
US2447696A
Cited
US2555080A
Cited
US2610464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |