US2802341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cooling products
Assignee: WILLIAM R GRAHAM
•
Filing: 1953-08-17
•
Granted: 1957-08-13
•
Expires: 1973-08-17
Abstract
No abstract record available.
Inventors
- 👤 Isaac H Polk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:26
CPC Classifications
F; F25; F25D; F25D25/00; F25D25/04; F25D13/00; F25D13/06; F25D13/062
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |