US2654559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm valve
Assignee: Imperial Brass Manufacturing Co
•
Filing: 1950-03-08
•
Granted: 1953-10-06
•
Expires: 1970-03-08
Abstract
No abstract record available.
Inventors
- 👤 George E Franck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:26
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/14; F16K7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US572580A
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US1470352A
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US1385058A
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US1802136A
Cited
US1783281A
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US2323531A
Cited
US2394243A
Cited
US2416061A
Cited
US2459720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |