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US2608960A
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Sliding abutment type rotary internal-combustion engine
Assignee: Individual
•
Filing: 1947-08-07
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Granted: 1952-09-02
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Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Kunz Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:37
CPC Classifications
F; F02; F02B; F02B53/00; F02B2730/00; F02B2730/01; F02B2730/011; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US679229A
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US1017971A
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US1049643A
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US1132928A
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US1949225A
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US1970003A
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US2352403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |