US2654975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reducing valve
Assignee: Denison Engineering Co
•
Filing: 1948-07-23
•
Granted: 1953-10-13
•
Expires: 1968-07-23
Abstract
No abstract record available.
Inventors
- 👤 Cecil E Adams
- 👤 Ellis H Born
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:03
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/101; G05D16/107; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2607; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7766
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US527902A
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US953403A
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US2225916A
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US939752A
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US1633728A
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US1733183A
Cited
US1709904A
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US2357318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |