US2585736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange unit having a trough
Assignee: KOLD HOLD Manufacturing Co
•
Filing: 1948-03-24
•
Granted: 1952-02-12
•
Expires: 1968-03-24
Abstract
No abstract record available.
Inventors
- 👤 Lauren R Burr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:09
CPC Classifications
F; F28; F28B; F28B1/00; F28B1/06; F25; F25B; F25B2339/00; F25B2339/04; F25B2339/043; Y; Y10; Y10S; Y10S165/00; Y10S165/163; Y10S165/177
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2064141A
Cited
US2071182A
Cited
US2145776A
Cited
US2090417A
Cited
FR845144A
Cited
US2471960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |