Patent US3451858A successfully refreshed from Google Patents.
US3451858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric device with graphite elements
Assignee: RCA Corp
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Filing: 1965-10-23
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Granted: 1969-06-24
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Andrew G F Dingwall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:44
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/81; H10N10/817
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A THERMOELECTRIC DEVICE COMPRISING AT LEAST TWO SEMICONDUCTOR THERMOELEMENTS OF OPPOSITE TYPE CONDUCTIVITY AND MEANS FOR ELECTRICALLY CONNECTING SAID THERMOELEMENTS, EACH OF SAID THERMOELEMENTS HAVING TWO ENDS, AT LEAST ONE OF THE ENDS OF ONE OF SAID THERMOELEMENTS BEING BONDED TO A FIRST CONTACTING MEMBER OF A MATERIAL OTHER THAN GRAPHITE, A FIRST GRAPHITE MEMBER BONDED TO THE OTHER END OF SAID ONE THERMOELEMENT, A SECOND GRAPHITE MEMBER ENGAGED WITH SAID FIRST GRAPHITE MEMBER, A SECOND CONTACTING MEMBER OF A MATERIAL OTHER THAN GRAPHITE BONDED TO SAID SECOND GRAPHIT MEMBER, AND MEANS FOR RESILIENTLY PRESSING SAID GRAPHITE MEMBERS TOGETHER.
Claim 2
Dependent Claim
99 words
A THERMOELECTRIC DEVICE COMPRISING AT LEAST TWO SEMICONDUCTOR THERMOELEMENTS OF OPPOSITE TYPE CONDUCTIVITY AND MEANS FOR ELECTRICALLY CONNECTING SAID THERMOELEMENTS, EACH OF SAID THERMOELEMENTS HAVING TWO ENDS, AT LEAST ONE OF THE ENDS OF ONE OF SAID THERMOELEMENTS BEING BONDED TO A FIRST CONTACTING MEMBER OF A MATERIAL OTHER THAN GRAPHITE, A FIRST GRAPHITE MEMBER BONDED TO THE OTHER END OF SAID ONE THERMOELEMENT, A SECOND GRAPHITE MEMBER ENGAGED WITH SAID FIRST GRAPHITE MEMBER, A SECOND CONTACTING MEMBER OF A MATERIAL OTHER THAN GRAPHITE BONDED TO SAID SECOND GRAPHIT MEMBER, AND MEANS FOR RESILIENTLY PRESSING SAID GRAPHITE MEMBERS TOGETHER.
References Cited (Backward Citations)
DE633828C
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US885430A
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US2289152A
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US3007989A
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US2979551A
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US3110628A
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US3178112A
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US3231965A
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US3256699A
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US3276915A
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US3285017A
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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) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |