US2610647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot operated fluid pressure control valve
Assignee: Brown and Sharpe Manufacturing Co
•
Filing: 1947-08-04
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Granted: 1952-09-16
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Expires: 1967-08-04
Abstract
No abstract record available.
Inventors
- 👤 George F Maglott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:13
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/166; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/5283; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/776; Y10T137/7762; Y10T137/7764; Y10T137/7768
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |