Patent US2750510A successfully refreshed from Google Patents.
US3405906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid pilot operated valve
Assignee: TDK Micronas GmbH
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Filing: 1966-08-04
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Granted: 1968-10-15
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Expires: 1986-08-04
Abstract
No abstract record available.
Inventors
- 👤 William F Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:01
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/406; F16K31/408; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |