US2569751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-way valve
Assignee: Alco Valve Co
•
Filing: 1945-04-21
•
Granted: 1951-10-02
•
Expires: 1965-04-21
Abstract
No abstract record available.
Inventors
- 👤 John E Dube
- 👤 Jones Evan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:47
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/0624; F16K31/0627; F16K31/0606; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8667; Y10T137/86686
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US211044A
Cited
US483108A
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US1383432A
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US1573192A
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US1622672A
Cited
FR688114A
Cited
DE660750C
Cited
US2291599A
Cited
US2267515A
Cited
US2289310A
Cited
US2311851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |