Patent US3139739A successfully refreshed from Google Patents.
US3139739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Updraft continuous freezer for comestibles
Assignee: W E STONE AND CO Inc
•
Filing: 1962-02-15
•
Granted: 1964-07-07
•
Expires: 1982-02-15
Abstract
No abstract record available.
Inventors
- 👤 Bert N Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:38
CPC Classifications
F; F25; F25D; F25D13/00; F25D13/06; F25D13/067; A; A23; A23B; A23B7/00; A23B7/04; A23B7/0408
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
IN A CONTINUOUS FREEZER FOR A COMESTIBLE PRODUCT, AN ENDLESS PERFORATED-BELT CONVEYOR HAVING AN UPPER RETURN COURSE OVERLYING A LOWER PRODUCT-CARRYING COURSE WHICH DISCHARGES INTO THE MOUTH OF AN OPEN DOWNWARDLY EXTENDING LOOP FORMED IN THE CONVEYOR BETWEEN THE DISCHARGE END OF THE PRODUCT-CARRYING COURSE AND THE BEGINNING OF SAID RETURN COURSE, MEANS FOR PASSING A GASEOUS COOLING MEDIUM UPWARDLY THROUGH BOTH SAID COURSES IN A FREEZING ZONE LOCATED INTERMEDIATE THEIR ENDS, PRODUCT-TO-CONVEYOR TRANSPORT MEANS EXTENDING TRANSVERSELY OF SAID CONVEYOR AND LOCATED BETWEEN SAID FREEZING ZONE AND THE BEGINNING OF SAID PRODUCT-CARRYING COURSE, PRODUCT-FROM-CONVEYOR TRANSPORT MEANS EXTENDING TRANS-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |