Patent US3229674A successfully refreshed from Google Patents.
US3229674A
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US
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Rotary piston engine
Assignee: Daimler Benz AG
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Filing: 1961-11-20
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Granted: 1966-01-18
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:24
CPC Classifications
F; F02; F02B; F02B53/00; F02B53/12; F02B1/00; F02B1/02; F02B1/04; F02B2053/005; F02B2730/00; F02B2730/01; F02B2730/018; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1132581A
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US1427053A
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US1575860A
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US1773635A
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US1931506A
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US2306950A
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US2412949A
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US2820856A
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US2988065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |