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Patent US2918249A successfully refreshed from Google Patents.
US2918249A
Expired / Lapsed
US
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Fluid pressure actuated control valve
Assignee: Individual
•
Filing: 1955-05-23
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Granted: 1959-12-22
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Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 John S Page
- 👤 Jr John S Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:05
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE530628A
Cited
CH49950A
Cited
US1270214A
Cited
US1925531A
Cited
FR969077A
Cited
US2676611A
Cited
US2679261A
Cited
DE859245C
Cited
US2619120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |