US2675204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noncorrodible fluid-pressure operated valve
Assignee: Individual
•
Filing: 1948-09-30
•
Granted: 1954-04-13
•
Expires: 1968-09-30
Abstract
No abstract record available.
Inventors
- 👤 Johnson Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:32
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; F16K31/1221; F16K27/00; F16K27/02; F16K27/0236; Y; Y10; Y10T; Y10T137/00; Y10T137/1189; Y10T137/1353
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US822500A
Cited
US850916A
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US922016A
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US1794703A
Cited
US1933085A
Cited
US1998882A
Cited
FR872318A
Cited
US2355862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |