Patent CA450241A successfully refreshed from Google Patents.
US3552138A
Expired / Lapsed
US
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Refrigerated display unit
Assignee: Pillsbury Co
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Filing: 1965-10-13
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Granted: 1971-01-05
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Expires: 1985-10-13
Abstract
Abstract 1. A COMBINED AUXILIARY REFRIGERATION AND DISPLAY CASE FOR USE WITH A PRIMARY DISPLAY CASE COMPRISING AN ENCLOSURE FORMED FROM A HEAT INSULATING MATERIAL DEFINING A STORAGE COMPARTMENT IN THE ENCLOSURE, AN OPENING IN THE ENCLOSURE FOR INSERTING AND WITHDRAWING FOOR PRODUCTS THEREFROM AAND A DUCT MEANS EXTENDING FROM THE AUXILIARY REFRIGERATION AND DISPLAY CASE TO SAID PRIMARY DISPLAY CASE FOR CONVEYING COOL AIR FROM THE PRIMARY DISPLAY CASE INTO THE AUXILIARY DISPLAY CASE.
Inventors
- 👤 Bob K Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:55
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/04; A47F3/0439; A47F3/0469; F; F25; F25D; F25D15/00; F25D17/00; F25D17/04; F25D17/06
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |