Patent US2807279A successfully refreshed from Google Patents.
US2807279A
Expired / Lapsed
US
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Flow control valve
Assignee: Individual
•
Filing: 1955-08-23
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Granted: 1957-09-24
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Expires: 1975-08-23
Abstract
No abstract record available.
Inventors
- 👤 Frank G Presnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:34
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/18; F16K17/19; F16K15/00; F16K15/02; F16K15/06; F16K15/063; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7773; Y10T137/7781; Y10T137/7784; Y10T137/7792; Y10T137/7837; Y10T137/7847; Y10T137/7848; Y10T137/7904
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |