Patent US2586637A successfully refreshed from Google Patents.
US2586637A
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Fluid pressure relay
Assignee: Elsag Bailey Inc
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Filing: 1948-04-13
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Granted: 1952-02-19
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Expires: 1968-04-13
Abstract
No abstract record available.
Inventors
- 👤 Edward W Fitch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:44
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/44; G05B11/48; G05B11/50; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/2452
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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |