US3407845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically operated valves
Assignee: R D COOKSLEY Manufacturing CO
•
Filing: 1964-11-17
•
Granted: 1968-10-29
•
Expires: 1984-11-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph D Cooksley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:19
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0686; F16K31/0693; F16K31/0603; F16K31/0624; F16K31/0627; F16K31/0641; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE299215C
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US1389056A
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US2465036A
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US2768790A
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US2912009A
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US3034761A
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US2992304A
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US3134932A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |