Patent US2966898A successfully refreshed from Google Patents.
US2966898A
Expired / Lapsed
US
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Rotary piston internal combustion engine
Assignee: Individual
•
Filing: 1957-08-26
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Granted: 1961-01-03
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Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Jacobs Albert Joseph
- 👤 Jacobs Peter Charles
- 👤 Cote Mary Caroline Denise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:00
CPC Classifications
F; F02; F02B; F02B53/00; F02B2730/00; F02B2730/01; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US874616A
Cited
US973833A
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US1473656A
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FR537527A
Cited
US1773635A
Cited
US1906142A
Cited
GB361030A
Cited
DE597941C
Cited
US1919355A
Cited
US2073101A
Cited
US2799253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |