US3353368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination evaporator and radiant heater defrost means
Assignee: General Electric Co
•
Filing: 1965-11-12
•
Granted: 1967-11-21
•
Expires: 1985-11-12
Abstract
No abstract record available.
Inventors
- 👤 Iii Gerald F Dodge
- 👤 Marvel A Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:13
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/06; F25D21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN COMBINATION, A REFRIGERANT EVAPORATOR COMPRISING A FIN STRUCTURE INCLUDING A PLURALITY OF SPACED, VERTICALLY EXTENDING PLATE-LIKE FINS AND NORMALLY OPERABLE AT FROST COLLECTING TEMPERATURES, A RADIANT HEAT DEFROST HEATER OPERABLE AT A SURFACE TEMPERATURE ABOVE THE BOILING POINT OF WATER, SAID HEATER BEING POSITIONED BELOW AND SPACED FROM SAID EVAPORATOR FOR PERIODICALLY WARMING SAID EVAPORATOR TO DEFROST TEMPERATURES,
Claim 2
Dependent Claim
59 words
IN COMBINATION, A REFRIGERANT EVAPORATOR COMPRISING A FIN STRUCTURE INCLUDING A PLURALITY OF SPACED, VERTICALLY EXTENDING PLATE-LIKE FINS AND NORMALLY OPERABLE AT FROST COLLECTING TEMPERATURES, A RADIANT HEAT DEFROST HEATER OPERABLE AT A SURFACE TEMPERATURE ABOVE THE BOILING POINT OF WATER, SAID HEATER BEING POSITIONED BELOW AND SPACED FROM SAID EVAPORATOR FOR PERIODICALLY WARMING SAID EVAPORATOR TO DEFROST TEMPERATURES,
References Cited (Backward Citations)
GB855394A
Cited
US3280581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |