Patent US2939472A successfully refreshed from Google Patents.
US2939472A
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US
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Air-pressure-operated automatically or manually actuated controller
Assignee: Honeywell Inc
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Filing: 1956-01-17
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Granted: 1960-06-07
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Expires: 1976-01-17
Abstract
No abstract record available.
Inventors
- 👤 Harold E Eller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:48
CPC Classifications
G; G05; G05B; G05B7/00; G05B7/04; Y; Y10; Y10S; Y10S137/00; Y10S137/90; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/2452
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2731023A
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US2747595A
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US2743710A
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US2834362A
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US2851047A
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US2763278A
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US2863470A
Cited
US2884939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |