Patent US2774341A successfully refreshed from Google Patents.
US2774341A
Expired / Lapsed
US
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Rotary internal combustion engine
Assignee: Individual
•
Filing: 1954-11-22
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Granted: 1956-12-18
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Expires: 1974-11-22
Abstract
No abstract record available.
Inventors
- 👤 Paul M Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:23
CPC Classifications
F; F02; F02B; F02B57/00; F02B57/08; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US686801A
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US809082A
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US1012201A
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US951388A
Cited
GB190917565A
Cited
US1109644A
Cited
US1293508A
Cited
US1331749A
Cited
GB114667A
Cited
US1641960A
Cited
US2168502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |