US2812909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modulating and cut-off valve control apparatus
Assignee: Honeywell Inc
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Filing: 1956-04-12
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Granted: 1957-11-12
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Expires: 1976-04-12
Abstract
No abstract record available.
Inventors
- 👤 Robert L Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:44
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; G05D23/126; G05D23/127; G05D23/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2214558A
Cited
US2317640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |