US2677390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm valve
Assignee: Permutit Co
•
Filing: 1949-03-03
•
Granted: 1954-05-04
•
Expires: 1969-03-03
Abstract
No abstract record available.
Inventors
- 👤 Davis Jesse Baar
- 👤 Pick Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:03
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; F16K31/1266; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87153
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19151E
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DE600738C
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US848739A
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CH30309A
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US1269721A
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US2103214A
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US2136751A
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US2180320A
Cited
US2294487A
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US2575775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |