US2774367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-operated controller having manually adjustable restrictions giving integral or reset, differential or rate, and proportional band-adjustment modes of operation
Assignee: Honeywell Inc
•
Filing: 1952-08-07
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Granted: 1956-12-18
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Expires: 1972-08-07
Abstract
No abstract record available.
Inventors
- 👤 Edward C Grogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:07
CPC Classifications
F; F15; F15C; F15C3/00; F15C3/04; G; G05; G05B; G05B11/00; G05B11/44; G05B11/48; G05B11/50; Y; Y10; Y10S; Y10S203/00; Y10S203/19; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/2452
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR878268A
Cited
GB536537A
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GB544643A
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GB544753A
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US2586637A
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GB568634A
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US2651317A
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US2505981A
Cited
US2588622A
Cited
US2517051A
Cited
US2638911A
Cited
US2638922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |