Patent US3529909A successfully refreshed from Google Patents.
US3529909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine
Assignee: GENERAL MANAGEMENT CO
•
Filing: 1966-05-26
•
Granted: 1970-09-22
•
Expires: 1986-05-26
Abstract
No abstract record available.
Inventors
- 👤 John J Klover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:38
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/18; F01C1/00; F01C1/30; F01C1/32; F01C1/34; F01C1/344; F01C1/3441; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |