US2974484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition system for rocket motors
Assignee: Individual
•
Filing: 1952-01-23
•
Granted: 1961-03-14
•
Expires: 1972-01-23
Abstract
No abstract record available.
Inventors
- 👤 Robert A Cooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:36
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/36; F02; F02K; F02K9/00; F02K9/95; F42C15/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2503472A
Cited
US2434652A
Cited
US2500334A
Cited
US2561670A
Cited
US2627160A
Cited
US2648190A
Cited
US2637161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |