US2525928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1947-01-20
•
Granted: 1950-10-17
•
Expires: 1967-01-20
Abstract
No abstract record available.
Inventors
- 👤 Fred W Mcrae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:48
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/30; F16K1/304; F16K1/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US974498A
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US1624186A
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US1508102A
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US1510528A
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US1552159A
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US1639853A
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US1741983A
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US1864250A
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US2010088A
Cited
CH196038A
Cited
US2253643A
Cited
US2314683A
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US2372631A
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US2360733A
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US2414908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |