US2447249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of refrigerating an article by contact with a vaporizable refrigerant
Assignee: MARISON Co
•
Filing: 1944-10-13
•
Granted: 1948-08-17
•
Expires: 1964-10-13
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:42
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/11; A; A23; A23B; A23B2/00; A23B2/80; A23B2/805; A23B2/85; A23B2/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US818979A
Cited
US1898758A
Cited
US1944857A
Cited
US1933257A
Cited
US2103925A
Cited
US2137902A
Cited
US2309938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |