Patent US3514236A successfully refreshed from Google Patents.
US3514236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine with epicyclic rotor
Assignee: VISH MACHINNO ELEKTROTECHNITCH
•
Filing: 1968-03-13
•
Granted: 1970-05-26
•
Expires: 1988-03-13
Abstract
No abstract record available.
Inventors
- 👤 Mihail Stoyanov Rashev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:00
CPC Classifications
F; F02; F02B; F02B53/00; F02B53/02; F02B53/10; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; 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)
US3306531A
Cited
US914627A
Cited
US3280802A
Cited
US3291063A
Cited
US3359951A
Cited
US3364907A
Cited
US3244155A
Cited
US3348529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |