Patent US2652851A successfully refreshed from Google Patents.
US2652851A
Expired / Lapsed
US
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Pilot valve and indicator construction
Assignee: Crane Co
•
Filing: 1950-08-10
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Granted: 1953-09-22
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Expires: 1970-08-10
Abstract
No abstract record available.
Inventors
- 👤 Edward G Schmidt
- 👤 Jr John E Svabek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:59
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/12; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/3476; Y10T137/353; Y10T137/8158; Y10T137/8225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US140006A
Cited
US498496A
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US588045A
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US600360A
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US1137129A
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GB140159A
Cited
US1465916A
Cited
US1583427A
Cited
US1779750A
Cited
US2274318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |