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Patent US2924793A successfully refreshed from Google Patents.
US2924793A
Expired / Lapsed
US
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Adjustable attenuator
Assignee: TDK Micronas GmbH
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Filing: 1956-03-09
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Granted: 1960-02-09
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Expires: 1976-03-09
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Engelmann
- 👤 Arditi Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:19
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/22; H01P1/227
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) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |