Patent US2491372A successfully refreshed from Google Patents.
US2491372A
Expired / Lapsed
US
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Control system
Assignee: Honeywell Inc
•
Filing: 1944-04-10
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Granted: 1949-12-13
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Expires: 1964-04-10
Abstract
No abstract record available.
Inventors
- 👤 Willis H Gille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:48
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/18; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US511560A
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US1310683A
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US649006A
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US1346563A
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US1557793A
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US2290884A
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US2151127A
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US2260122A
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US2376142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |