US2597061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic cooling system
Assignee: Individual
•
Filing: 1949-02-12
•
Granted: 1952-05-20
•
Expires: 1969-02-12
Abstract
No abstract record available.
Inventors
- 👤 Burich John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:07
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/14; F01P11/16; F01P7/00; F01P7/14; F01P7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1455335A
Cited
US1668817A
Cited
US1028808A
Cited
US1332332A
Cited
US1676961A
Cited
US2457618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |