Patent US2576246A successfully refreshed from Google Patents.
US2576246A
Expired / Lapsed
US
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Modulating valve
Assignee: —
•
Filing: —
•
Granted: 1951-11-27
•
Expires: 1968-11-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:37
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; G05D23/126; G05D23/127; F; F23; F23N; F23N1/00; F23N1/005; G05D23/128; F23N2235/00; F23N2235/12; F23N2235/14; F23N2235/16; F23N2235/20; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1126248A
Cited
US1713707A
Cited
US2262823A
Cited
US2285913A
Cited
US2329820A
Cited
US2529378A
Cited
US2470572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |