Patent US2807281A successfully refreshed from Google Patents.
US2807281A
Expired / Lapsed
US
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Multiple valve
Assignee: Fyr Fyter Co
•
Filing: 1952-09-16
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Granted: 1957-09-24
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Expires: 1972-09-16
Abstract
No abstract record available.
Inventors
- 👤 Frank B Allen
- 👤 Walter M Haessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:27
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F16K11/163; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919; Y10T137/877; Y10T137/87708; Y10T137/8774
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US909989A
Cited
US1127552A
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US1966567A
Cited
GB409683A
Cited
US2206215A
Cited
US2301276A
Cited
US2327942A
Cited
US2661765A
Cited
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 |