Patent US2671189A successfully refreshed from Google Patents.
US2671189A
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Semiconductor amplifier having a resiliently adjustably mounted semiconductor
Assignee: Siemens and Halske AG
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Filing: 1950-11-27
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Granted: 1954-03-02
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Expires: 1970-11-27
Abstract
No abstract record available.
Inventors
- 👤 Gaudlitz Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:24
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10D; H10D99/00; H10W72/00; H10W76/00; H10W76/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1182946A
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US1814592A
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US2432116A
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US2429823A
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US2415841A
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US2538593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |