US3468323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for linearizing fluid amplifier gain
Assignee: Bowles Engineering Corp
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Filing: 1964-11-23
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Granted: 1969-09-23
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Expires: 1984-11-23
Abstract
No abstract record available.
Inventors
- 👤 Donnie R Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:36
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/206; Y10T137/218; Y10T137/2202; Y10T137/2218; Y10T137/2229; Y10T137/2234; Y10T137/2262
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |