US3451005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Negative resistance amplifier arrangement and method therefor
Assignee: TDK Micronas GmbH
•
Filing: 1966-05-05
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Granted: 1969-06-17
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Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Per S Skullestad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:24
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/16; H01; H01P; H01P1/00; H01P1/20; H01P1/213; H01P1/2135; H03; H03F; H03F3/00; H03F3/04; H03F3/10; H03F3/12; H03F3/60; H03F3/608; H03H; H03H11/00; H03H11/02; H03H11/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA680490A
Cited
US3208003A
Cited
US3219842A
Cited
US3293447A
Cited
US3300730A
Cited
US3316421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |