Patent US1468748A successfully refreshed from Google Patents.
US2603446A
Expired / Lapsed
US
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Valve with double-acting washer
Assignee: HARRY E KARR
•
Filing: 1948-12-17
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Granted: 1952-07-15
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Expires: 1968-12-17
Abstract
No abstract record available.
Inventors
- 👤 Hiram R Harding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:27
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US258019A
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US413518A
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US909789A
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US1718350A
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US908138A
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US1077457A
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US1514233A
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US1910994A
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US2330881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |