Patent US2647538A successfully refreshed from Google Patents.
US2647538A
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US
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Manually and fluid-pressure operated valve
Assignee: Honeywell Inc
•
Filing: 1947-09-18
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Granted: 1953-08-04
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Expires: 1967-09-18
Abstract
No abstract record available.
Inventors
- 👤 Peter P Demay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:47
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/02; F16K31/00; F16K31/12; F16K31/14; F16K31/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1875387A
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US893124A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |