US3487306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument for checking energization of solenoid valves and position of valve plunger
Assignee: Giddings and Lewis LLC
•
Filing: 1965-10-04
•
Granted: 1969-12-30
•
Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 William D Harmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:38
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; G; G01; G01R; G01R31/00; G01R31/50; G01R31/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2103179A
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US2374166A
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US2428326A
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US2436741A
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US2454807A
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US2501598A
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US2744232A
Cited
US3075144A
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US3076931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |