US2711629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rocket engine
Assignee: Individual
•
Filing: 1951-06-29
•
Granted: 1955-06-28
•
Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Richard L Schapker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:47
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/46; F02K9/48
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2283863A
Cited
US2256198A
Cited
US2496710A
Cited
US2623352A
Cited
US2576985A
Cited
US2523009A
Cited
US2500537A
Cited
US2536598A
Cited
US2517822A
Cited
US2523656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |