US2927439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for freezing unpackaged products
Assignee: WILLIAM R GRAHAM
•
Filing: 1956-04-26
•
Granted: 1960-03-08
•
Expires: 1976-04-26
Abstract
No abstract record available.
Inventors
- 👤 Isaac H Polk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:24
CPC Classifications
A; A23; A23G; A23G9/00; A23G9/04; A23G9/14; A23G9/18; A23G9/22; A23G9/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1218985A
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US2631440A
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US2639594A
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US2670296A
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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) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |