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US2104847A
Expired / Lapsed
US
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Jet refrigerating system with osmotic pump
Assignee: Individual
•
Filing: 1935-04-19
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Granted: 1938-01-11
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Expires: 1955-04-19
Abstract
No abstract record available.
Inventors
- 👤 Kemper P Brace
- 👤 Robert B P Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:42
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/06; F25B1/08; F25B15/00; F25B15/14; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
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) | 1941-01-10 | 1941-07-12 | 1942-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-10 | 1945-07-12 | 1946-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-10 | 1949-07-12 | 1950-01-11 | $7700.00 | Window Closed / Lapsed |