Patent US3199034A successfully refreshed from Google Patents.
US3199034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pedestal cancellation and video transmission circuit
Assignee: Hrb-Singer Inc
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Filing: 1961-05-23
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Granted: 1965-08-03
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Expires: 1981-05-23
Abstract
No abstract record available.
Inventors
- 👤 Vernon H Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:22
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/04; H04N5/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A PEDESTAL CANCELLATION CIRCUIT COMPRISING A CURRENT AMPLIFIER DEVICE HAVING A CURRENT INPUT TERMINAL, A CURRENT OUTPUT TERMINAL, AND TWO CURRENT CONTROL TERMINALS, SAID CURRENT AMPLIFIER DEVICE HAVING ONE VALUE OF TRANSCONDUCTANCE WITH RESPECT TO SIGNALS APPLIED TO ONE CURRENT CONTROL TERMINAL AND A DIFFERENT VALUE OF TRANSCONDUCTANCE WITH RESPECT TO SIGNALS APPLIED TO THE OTHER CURRENT CONTROL TERMINAL; A CURRENT INPUT IMPEDANCE COUPLED TO SAID CURRENT INPUT TERMINAL; A CURRENT OUTPUT IMPEDANCE COUPLED TO SAID CURRENT OUTPUT TERMINAL; MEANS FOR COUPLING A COMMON INPUT SIGNAL TO EACH OF SAID CURRENT
References Cited (Backward Citations)
US2679002A
Cited
US2731557A
Cited
FR1041341A
Cited
US2806946A
Cited
US2793347A
Cited
US2841708A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |