Patent US2744719A successfully refreshed from Google Patents.
US2744719A
Expired / Lapsed
US
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Quick-opening and quick-closing valve
Assignee: Individual
•
Filing: 1952-08-16
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Granted: 1956-05-08
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Expires: 1972-08-16
Abstract
No abstract record available.
Inventors
- 👤 Fred W Mcrae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:40
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/363; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US668202A
Cited
US971802A
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US1513424A
Cited
FR590737A
Cited
US2146878A
Cited
DE647978C
Cited
US2389661A
Cited
US2445163A
Cited
US2356990A
Cited
US2384627A
Cited
FR898395A
Cited
CH236825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |