US2999482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital fluid control system
Assignee: North American Aviation Corp
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Filing: 1957-04-15
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Granted: 1961-09-12
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Expires: 1977-04-15
Abstract
No abstract record available.
Inventors
- 👤 John L Bower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:11
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B11/042; F15B11/0426; F15B21/00; F15B21/08; G; G06; G06G; G06G5/00; F15B2211/00; F15B2211/40; F15B2211/405; F15B2211/40507; F15B2211/40576; F15B2211/40592; F15B2211/41; F15B2211/411; F15B2211/42; F15B2211/426; F15B2211/455; F15B2211/46; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/75; Y; Y10; Y10S; Y10S60/00; Y10S60/911; Y10S91/00; Y10S91/01; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87281; Y10T137/8729; Y10T137/87298
Claims Analysis
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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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |