US2778196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control apparatus for refrigeration system
Assignee: Individual
•
Filing: 1952-08-18
•
Granted: 1957-01-22
•
Expires: 1972-08-18
Abstract
No abstract record available.
Inventors
- 👤 William E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:18
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2301656A
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US2224377A
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US2338362A
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US2321819A
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US2418853A
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US2547070A
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US2581956A
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US2603954A
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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) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |