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US2915684A
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US
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Magnetically controllable semiconducting resistance device and method of its manufacture
Assignee: Siemens Schuckertwerke AG
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Filing: 1955-06-28
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Granted: 1959-12-01
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Expires: 1975-06-28
Abstract
No abstract record available.
Inventors
- 👤 Halla Ottkar
- 👤 Kubrt Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:10
CPC Classifications
G; G01; G01R; G01R21/00; G01R21/08; G01R33/00; G01R33/02; G01R33/06; G01R33/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |