US3449173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric couple with soft solder electrically connecting semi-conductors and method of making same
Assignee: Siemens AG
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Filing: 1968-06-03
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Granted: 1969-06-10
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Expires: 1988-06-03
Abstract
No abstract record available.
Inventors
- 👤 Joachim Rupprecht
- 👤 Heinz Walz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:02
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/81; H10N10/817
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3261713A
Cited
US3226804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |