US2789415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary-heat-engine
Assignee: Individual
•
Filing: 1950-04-13
•
Granted: 1957-04-23
•
Expires: 1970-04-13
Abstract
No abstract record available.
Inventors
- 👤 Armard V Motsinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:34
CPC Classifications
F; F02; F02B; F02B53/00; F02B2730/00; F02B2730/01; F02B2730/012; F28; F28D; F28D15/00; F28D15/02; F28D2015/0291; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US176263A
Cited
US239832A
Cited
US239955A
Cited
US292400A
Cited
US355634A
Cited
US389045A
Cited
US1169308A
Cited
US1032236A
Cited
US1557557A
Cited
US1726462A
Cited
US2060728A
Cited
US2157229A
Cited
US2255584A
Cited
US2301404A
Cited
US2240906A
Cited
US2227129A
Cited
US2398471A
Cited
US2513692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |