US2667177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush tank valve with vacuum breaker
Assignee: MANSFIELD SANITARY POTTERY Inc
•
Filing: 1948-11-23
•
Granted: 1954-01-26
•
Expires: 1968-11-23
Abstract
No abstract record available.
Inventors
- 👤 Smith Harry Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:25
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; E03C1/108; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185; Y10T137/3294; Y10T137/3331; Y10T137/7287; Y10T137/7358; Y10T137/7439; Y10T137/7446; Y10T137/7449; Y10T137/7465; Y10T137/7472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2117289A
Cited
US2292373A
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US2159691A
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US2247525A
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US2219259A
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US2318236A
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US2211212A
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US2270910A
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US2294785A
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US2290145A
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US2284051A
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US2303037A
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US2382427A
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US2427525A
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US2516578A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |