Patent US2589251A successfully refreshed from Google Patents.
US2589251A
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Fluid operated measuring or control apparatus
Assignee: Reconstruction Finance Corp
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Filing: 1945-08-24
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Granted: 1952-03-18
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Expires: 1965-08-24
Abstract
No abstract record available.
Inventors
- 👤 Winfield B Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:35
CPC Classifications
G; G01; G01B; G01B13/00; G01B13/02; G05; G05B; G05B11/00; G05B11/44; G05B11/48; G05B11/50; Y; Y10; Y10S; Y10S236/00; Y10S236/01; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/2452
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19276E
Cited
US2132338A
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US1558530A
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US2021053A
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US2266566A
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US2263335A
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US2350058A
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US2290527A
Cited
US2345732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |