US2431132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of propulsion
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1943-06-07
•
Granted: 1947-11-18
•
Expires: 1963-06-07
Abstract
No abstract record available.
Inventors
- 👤 Frank J Malina
- 👤 Summerfield Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:54
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/50; B; B64; B64C; B64C35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1850711A
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US1986064A
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US2183313A
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US2217649A
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US2351750A
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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) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |