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US3461680A
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Method and apparatus for refrigerating foodstuffs
Assignee: Messer Griesheim GmbH
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Filing: 1967-05-05
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Granted: 1969-08-19
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Expires: 1987-05-05
Abstract
No abstract record available.
Inventors
- 👤 Ernst A Rische
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:48
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/11; A; A23; A23B; A23B2/00; A23B2/80; A23B2/803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2484297A
Cited
US2951353A
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US3048989A
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US3360384A
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US3255597A
Cited
US3315480A
Cited
US3302423A
Cited
US3255599A
Cited
US3277657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |