US2763983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion type power generating apparatus
Assignee: Individual
•
Filing: 1946-04-02
•
Granted: 1956-09-25
•
Expires: 1966-04-02
Abstract
No abstract record available.
Inventors
- 👤 Robert S Kafka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:10
CPC Classifications
F; F02; F02C; F02C5/00; F02C5/12; F02K; F02K7/00; F02K7/02; F02K7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US617753A
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FR345486A
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GB190426178A
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FR353749A
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US853925A
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FR365042A
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FR412478A
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US1014332A
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US1329559A
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US1405482A
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US1542056A
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US2078957A
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US2283863A
Cited
FR844442A
Cited
US2409176A
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US2414829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |