Patent US1920845A successfully refreshed from Google Patents.
US1920845A
Expired / Lapsed
US
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Refrigerating system
Assignee: General Electric Co
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Filing: 1932-10-26
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Granted: 1933-08-01
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Expires: 1952-10-26
Abstract
No abstract record available.
Inventors
- 👤 Dantsizen Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:29
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/008; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K2205/00; C09K2205/10; C09K2205/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-07-31 | 1937-01-30 | 1937-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-31 | 1941-01-30 | 1941-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-31 | 1945-01-30 | 1945-08-01 | $7700.00 | Window Closed / Lapsed |