US2553253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet propulsion engine
Assignee: Individual
•
Filing: 1945-03-05
•
Granted: 1951-05-15
•
Expires: 1965-03-05
Abstract
No abstract record available.
Inventors
- 👤 Russell R Hays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:27
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/06; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR412478A
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FR409379A
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US1021521A
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US1519444A
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US1820946A
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US1897092A
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US2054081A
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US2142601A
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US2371687A
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US2380969A
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US2432213A
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US2462587A
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US2474359A
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US2446266A
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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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |