US2685936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound reduction equipment for use with jet-propulsion units
Assignee: Lockheed Martin Corp
•
Filing: 1950-08-08
•
Granted: 1954-08-10
•
Expires: 1970-08-08
Abstract
No abstract record available.
Inventors
- 👤 Robert W Brenneman
- 👤 Jacobsen Edwin
- 👤 Richard S Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:05
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US821828A
Cited
US1363345A
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US1495690A
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US1560947A
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US1794276A
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US1857845A
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US2365846A
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US2389059A
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US2455965A
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US2363236A
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US2396952A
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US2579282A
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US2516948A
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US2548563A
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US2586788A
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US2501767A
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US2519162A
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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) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |