US2951999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant impedance attenuator
Assignee: TDK Micronas GmbH
•
Filing: 1958-04-21
•
Granted: 1960-09-06
•
Expires: 1978-04-21
Abstract
No abstract record available.
Inventors
- 👤 Theodore J Marchese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/22; H01P1/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2510614A
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US2524857A
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US2720609A
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US2669674A
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US2742588A
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US2771565A
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US2811673A
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US2806972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |