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Patent US2622405A successfully refreshed from Google Patents.
US2622405A
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US
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Two-temperature refrigerating system
Assignee: General Electric Co
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Filing: 1950-01-06
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Granted: 1952-12-23
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Expires: 1970-01-06
Abstract
No abstract record available.
Inventors
- 👤 Charles S Grimshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:45
CPC Classifications
F; F25; F25B; F25B5/00; F25B5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955087A
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US1523112A
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US1949676A
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US2030676A
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US2133949A
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US2240284A
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US2198328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |