US3475623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic high-pass and low-pass filters employing the base to emitter diode resistance of bipolar transistors
Assignee: ROBERT A MOOG
•
Filing: 1966-10-10
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Granted: 1969-10-28
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Expires: 1986-10-10
Abstract
No abstract record available.
Inventors
- 👤 Robert A Moog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:52
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/04; H03H11/12; H03H11/1291
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3070762A
Cited
US3363177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |