Patent US3121159A successfully refreshed from Google Patents.
US3024805A
Expired / Lapsed
US
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Negative feedback fluid amplifier
Assignee: Individual
•
Filing: 1960-05-20
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Granted: 1962-03-13
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Expires: 1980-05-20
Abstract
No abstract record available.
Inventors
- 👤 Billy M Horton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:57
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; F15C1/08; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2229; Y10T137/2234; Y10T137/224; Y10T137/2245; Y10T137/2278; Y10T137/2322; Y10T137/2409; Y10T137/8593; Y10T137/877; Y10T137/87885; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301624; Y10T409/30168; Y10T409/302072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |