Patent US3399689A successfully refreshed from Google Patents.
US3399689A
Expired / Lapsed
US
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Control valve including independently operable pilot valves
Assignee: Victor Equipment Co
•
Filing: 1965-10-18
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Granted: 1968-09-03
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 Robert S Keane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:27
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/42; F16K1/00; F16K1/12; F16K1/126; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/3421; Y10T137/8593; Y10T137/86381; Y10T137/87169; Y10T137/87217; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US595061A
Cited
CA616350A
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US1005703A
Cited
US1595755A
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US2314860A
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FR1054190A
Cited
US2841359A
Cited
US2925984A
Cited
US3177889A
Cited
US3340773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |