US3057149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rocket propellant spark ignition system
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1958-09-30
•
Granted: 1962-10-09
•
Expires: 1978-09-30
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Leinweber
- 👤 Howard E Corbitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:05
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1960685A
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US2493073A
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GB655121A
Cited
US2643284A
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GB747593A
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US2826721A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |