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US2608374A
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Valve
Assignee: Walworth Co
•
Filing: 1947-10-31
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Granted: 1952-08-26
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Expires: 1967-10-31
Abstract
No abstract record available.
Inventors
- 👤 French H Morehead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:39
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K31/00; F16K31/12; F16K31/16; F16K31/163; F16K31/1635; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/2802; Y10T137/2815; Y10T137/2822; Y10T137/4238; Y10T137/4358; Y10T137/4386; Y10T137/6851; Y10T137/7043; Y10T137/7062; Y10T137/8158; Y10T137/8225; Y10T137/8275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2107182A
Cited
US2119766A
Cited
US2093091A
Cited
US2254341A
Cited
US2265526A
Cited
US2322379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |