Patent US2742768A successfully refreshed from Google Patents.
US2742768A
Expired / Lapsed
US
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Control valve for liquid pressure reduction
Assignee: Individual
•
Filing: 1952-02-12
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Granted: 1956-04-24
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Expires: 1972-02-12
Abstract
No abstract record available.
Inventors
- 👤 Alvin H Baer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:38
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/31; F25B41/33; F25B41/335; F25B2341/00; F25B2341/06; F25B2341/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1853273A
Cited
US2016234A
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US2224377A
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US2337862A
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US2497677A
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US2505933A
Cited
US2558930A
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US2521637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |