Patent US3069849A successfully refreshed from Google Patents.
US3069849A
Expired / Lapsed
US
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Propellant mixture control
Assignee: RTX Corp
•
Filing: 1960-10-05
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Granted: 1962-12-25
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Expires: 1980-10-05
Abstract
No abstract record available.
Inventors
- 👤 Hugh S Crim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:20
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2367176A
Cited
US2606420A
Cited
US2564127A
Cited
US2637334A
Cited
US2857739A
Cited
US2949007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |