US2530295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swinging slide valve
Assignee: Henry Pratt Co LLC
•
Filing: 1945-08-22
•
Granted: 1950-11-14
•
Expires: 1965-08-22
Abstract
No abstract record available.
Inventors
- 👤 Fred C Fantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:00
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/24; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86847
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US167751A
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US260490A
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US524922A
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US845213A
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US1265807A
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US1821992A
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US1951878A
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FR737742A
Cited
US2028726A
Cited
US2020181A
Cited
US2097285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |