US2257616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cooling liquids
Assignee: Barrett Co Inc
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Filing: 1940-04-25
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Granted: 1941-09-30
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Expires: 1960-04-25
Abstract
No abstract record available.
Inventors
- 👤 Miller Stuart Parmelee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:13
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/14; B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0009; B01D9/0018; B01D9/0022
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) | 1944-09-29 | 1945-03-31 | 1945-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-09-29 | 1949-03-31 | 1949-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-09-29 | 1953-03-31 | 1953-09-30 | $7700.00 | Window Closed / Lapsed |