Patent US2937505A successfully refreshed from Google Patents.
US2937505A
Expired / Lapsed
US
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Reversible refrigerating system
Assignee: Motors Liquidation Co
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Filing: 1956-10-12
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Granted: 1960-05-24
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Expires: 1976-10-12
Abstract
No abstract record available.
Inventors
- 👤 Richard L Merrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:06
CPC Classifications
F; F25; F25B; F25B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2139297A
Cited
US2182718A
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US2276814A
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US2353240A
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US2637985A
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US2774220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |