Patent US3100969A successfully refreshed from Google Patents.
US3100969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric refrigeration
Assignee: Individual
•
Filing: 1960-08-03
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Granted: 1963-08-20
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Expires: 1980-08-03
Abstract
No abstract record available.
Inventors
- 👤 Thore M Elfving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; F25D; F25D25/00; F25D25/02; F25D25/028; F25D11/00; F25D11/02; F25D11/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A THERMOELECTRIC HEAT PUMP COMPRISING A THERMOCOUPLE ASSEMBLY HAVING HOT AND COLD JUNCTIONS, A CONDENSER IN HEAT EXCHANGE RELATIONSHIP WITH THE COLD JUNCTIONS OF SAID THERMOCOUPLE ASSEMBLY, AN EVAPORATOR, SAID CONDENSER AND EVAPORATOR FORMED BY DIFFERENT PORTIONS OF A HERMETICALLY SEALED SYSTEM PARTLY FILLED WITH A VOLATILE LIQUID, SAID SYSTEM INCLUDING FIRST AND SECOND PLATES
Claim 2
Dependent Claim
55 words
A THERMOELECTRIC HEAT PUMP COMPRISING A THERMOCOUPLE ASSEMBLY HAVING HOT AND COLD JUNCTIONS, A CONDENSER IN HEAT EXCHANGE RELATIONSHIP WITH THE COLD JUNCTIONS OF SAID THERMOCOUPLE ASSEMBLY, AN EVAPORATOR, SAID CONDENSER AND EVAPORATOR FORMED BY DIFFERENT PORTIONS OF A HERMETICALLY SEALED SYSTEM PARTLY FILLED WITH A VOLATILE LIQUID, SAID SYSTEM INCLUDING FIRST AND SECOND PLATES
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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) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |