US2608960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding abutment type rotary internal-combustion engine
Assignee: Individual
•
Filing: 1947-08-07
•
Granted: 1952-09-02
•
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 06:54
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US627832A
Cited
US694763A
Cited
US679229A
Cited
US765047A
Cited
US1017971A
Cited
US1049643A
Cited
US1132928A
Cited
US1949225A
Cited
US1970003A
Cited
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 |