US2854994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot-operated valves
Assignee: Cameron Solutions Inc
•
Filing: 1956-10-15
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Granted: 1958-10-07
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Expires: 1976-10-15
Abstract
No abstract record available.
Inventors
- 👤 Clarence O Glasgow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:14
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/02; F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/34; F16T; F16T1/00; F16T1/20; F16T1/22; F16T1/24; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7374; Y10T137/7439; Y10T137/7481
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1296206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |