Patent US2548424A successfully refreshed from Google Patents.
US2548424A
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Temperature control system with signal
Assignee: CROWN CONTROLS Co Inc
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Filing: 1946-03-13
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Granted: 1951-04-10
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Expires: 1966-03-13
Abstract
No abstract record available.
Inventors
- 👤 Carl H Dicke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:55
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/2754
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1835307A
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US1876636A
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US1981251A
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US2164352A
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US2110192A
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US2129477A
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US2301383A
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US2342126A
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US2300839A
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US2402177A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |