Patent US2813694A successfully refreshed from Google Patents.
US2813694A
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Irrigation control valve
Assignee: LIVINGSTON TOOL CO
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Filing: 1954-07-09
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Granted: 1957-11-19
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Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 Oren B Harmes
- 👤 George J Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:49
CPC Classifications
F; F16; F16K; F16K1/00; E; E02; E02B; E02B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734656A
Cited
US894240A
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FR513355A
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FR682765A
Cited
US2001094A
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US2324256A
Cited
US2628056A
Cited
US2688461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |