Patent US2611542A successfully refreshed from Google Patents.
US2611542A
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Fluid-flow control device and system
Assignee: Honeywell Inc
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Filing: 1948-08-23
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Granted: 1952-09-23
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Expires: 1968-08-23
Abstract
No abstract record available.
Inventors
- 👤 Crum Stephen
- 👤 Hubert T Sparrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:22
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/60; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G05D23/275; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2170310A
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US2209566A
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US2208761A
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US2247060A
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US2231696A
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US2461615A
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US2437894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |