US2998018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro thermal valve
Assignee: Lockheed Martin Corp
•
Filing: 1959-07-06
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Granted: 1961-08-29
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Expires: 1979-07-06
Abstract
No abstract record available.
Inventors
- 👤 Harold R Beck
- 👤 Robert S Poplin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:59
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/009; F; F16; F16K; F16K17/00; F16K17/36; F16K17/38; F16K17/383; G; G08; G08B; G08B17/00; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US166451A
Cited
US900763A
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US1292603A
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US1734186A
Cited
US1834645A
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US2360733A
Cited
GB782559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |