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Patent US1996781A successfully refreshed from Google Patents.
US1996781A
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Method of freezing liquid or semiliquid substances in containers
Assignee: AMERICAN SEALCONE Corp
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Filing: 1930-08-23
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Granted: 1935-04-09
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Expires: 1950-08-23
Abstract
No abstract record available.
Inventors
- 👤 Lewis B Winton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:27
CPC Classifications
F; F25; F25D; F25D13/00; F25D13/06; F25D13/065; A; A23; A23B; A23B11/00; A23B11/10; A23B11/14; A23B11/145; A23B11/1455; A23B2/00; A23B2/80; A23B2/803; A23B2/8033; A23B70/00
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) | 1938-04-08 | 1938-10-08 | 1939-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-08 | 1942-10-08 | 1943-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-08 | 1946-10-08 | 1947-04-09 | $7700.00 | Window Closed / Lapsed |