US2741264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversing valves
Assignee: York Corp
•
Filing: 1951-12-05
•
Granted: 1956-04-10
•
Expires: 1971-12-05
Abstract
No abstract record available.
Inventors
- 👤 William D Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:07
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/044; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686; Y10T137/86879; Y10T137/86895; Y10T137/87265; Y10T137/87322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US860259A
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US1235338A
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US1478815A
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US1575771A
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US1855354A
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US1802093A
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US1921092A
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US2138513A
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US2188836A
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US2640494A
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US2703106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |