Patent US1846288A successfully refreshed from Google Patents.
US1846288A
Expired / Lapsed
US
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Cooling apparatus
Assignee: Individual
•
Filing: 1928-06-01
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Granted: 1932-02-23
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Expires: 1948-06-01
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Varnau
- 👤 Truman B Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:11
CPC Classifications
B; B01; B01J; B01J10/00; B01J10/02; C; C13; C13B; C13B30/00; C13B30/02; F; F01; F01M; F01M5/00; Y; Y10; Y10S; Y10S159/00; Y10S159/23
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) | 1935-02-22 | 1935-08-24 | 1936-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-02-22 | 1939-08-24 | 1940-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-02-22 | 1943-08-24 | 1944-02-23 | $7700.00 | Window Closed / Lapsed |