Patent US2919710A successfully refreshed from Google Patents.
US2919710A
Expired / Lapsed
US
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Two-way freeze valve
Assignee: Individual
•
Filing: 1956-08-24
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Granted: 1960-01-05
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Expires: 1976-08-24
Abstract
No abstract record available.
Inventors
- 👤 Kenneth D Lantz
- 👤 Phillip M Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:04
CPC Classifications
G; G21; G21D; G21D1/00; G21D1/02; F; F16; F16K; F16K13/00; F16K49/00; G21C; G21C1/00; G21C1/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1812; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1292603A
Cited
US1602887A
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US1906636A
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US1917895A
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US1805963A
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US2646065A
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US2698630A
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US2717032A
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US2834360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |