Patent US3515502A successfully refreshed from Google Patents.
US3515502A
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Multipurpose control valve
Assignee: United States Department of the Army
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Filing: 1967-07-26
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Granted: 1970-06-02
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Expires: 1987-07-26
Abstract
No abstract record available.
Inventors
- 👤 John E Coordes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:14
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/20; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86509; Y10T137/86517; Y10T137/86533; Y10T137/86541; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86662; Y10T137/87571; Y10T137/87587; Y10T137/87611; Y10T137/87619; Y10T137/87627; Y10T137/87635
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB113660A
Cited
US1545700A
Cited
US1491115A
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US2327046A
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US2649113A
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US3094173A
Cited
US3165122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |