Patent US2492859A successfully refreshed from Google Patents.
US2492859A
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US
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Control means for fluid pressure operated devices
Assignee: Clayton Manufacturing Co
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Filing: 1944-07-01
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Granted: 1949-12-27
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Expires: 1964-07-01
Abstract
No abstract record available.
Inventors
- 👤 Donald G Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:30
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7783; Y10T137/8593; Y10T137/87265; Y10T137/87539; Y10T137/87547; Y10T137/87555; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |