US3513867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuned and regenerative flueric amplifiers
Assignee: United States Department of the Army
•
Filing: 1967-12-12
•
Granted: 1970-05-26
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Expires: 1987-12-12
Abstract
No abstract record available.
Inventors
- 👤 Francis M Manion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:23
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/02; F15C1/06; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/206; Y10T137/2229; Y10T137/2256; Y10T137/2262
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3275013A
Cited
US3217727A
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US3294103A
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US3402727A
Cited
US3379204A
Cited
US3413994A
Cited
US3398758A
Cited
US3413996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |