US2872148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracer controlled valve
Assignee: Individual
•
Filing: 1953-07-03
•
Granted: 1959-02-03
•
Expires: 1973-07-03
Abstract
No abstract record available.
Inventors
- 👤 Humes Gale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:05
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524; F16K31/52475; F16K31/52483; B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/24; B23Q35/26; B23Q35/36; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/303304
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR762270A
Cited
US2158558A
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US2263110A
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US2386825A
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US2332533A
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US2337166A
Cited
US2389653A
Cited
US2589204A
Cited
US2600746A
Cited
US2578362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |