US3308309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for suppressing spurious signals
Assignee: Robert Bosch Fernsehanlagen GmbH
•
Filing: 1964-03-10
•
Granted: 1967-03-07
•
Expires: 1984-03-10
Abstract
No abstract record available.
Inventors
- 👤 Wichmann Lothar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:32
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/30; H03F3/26; H03F3/50; H04; H04B; H04B15/00; H04B3/00; H04B3/02; H04B3/28; H04B3/32; H04N; H04N7/00; H04N7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A CIRCUIT ARRANGEMENT FOR SUPPRESSING SPURIOUS SIGNALS CAUSED BY DIFFERING EARTH POTENTIALS AT THE ENDS OF AN UNBALANCED TRANSMISSION LINE, COMPRISING A FIRST AND A SECOND TRANSISTOR, THE EMITTER OF SAID FIRST TRANSISTOR BEING CONNECTED TO THE COLLECTOR OF SAID SECOND TRANSISTOR BY WAY OF A RESISTOR, THE EMITTER OF SAID SECOND TRANSISTOR BEING CONNECTED TO ONE TERMINAL OF THE DIRECT CURRENT SUPPLY BY WAY OF A NEGATIVE FEED-BACK RESISTOR, BOTH RESISTORS HAVING THE SAME VALUE, THE COLLECTOR OF SAID FIRST TRANSISTOR BEING CONNECTED TO THE OTHER TERMINAL OF SAID DIRECT CURRENT SUPPLY, THE BASE OF SAID SECOND TRANSISTOR BEING CON-
Claim 2
Dependent Claim
101 words
A CIRCUIT ARRANGEMENT FOR SUPPRESSING SPURIOUS SIGNALS CAUSED BY DIFFERING EARTH POTENTIALS AT THE ENDS OF AN UNBALANCED TRANSMISSION LINE, COMPRISING A FIRST AND A SECOND TRANSISTOR, THE EMITTER OF SAID FIRST TRANSISTOR BEING CONNECTED TO THE COLLECTOR OF SAID SECOND TRANSISTOR BY WAY OF A RESISTOR, THE EMITTER OF SAID SECOND TRANSISTOR BEING CONNECTED TO ONE TERMINAL OF THE DIRECT CURRENT SUPPLY BY WAY OF A NEGATIVE FEED-BACK RESISTOR, BOTH RESISTORS HAVING THE SAME VALUE, THE COLLECTOR OF SAID FIRST TRANSISTOR BEING CONNECTED TO THE OTHER TERMINAL OF SAID DIRECT CURRENT SUPPLY, THE BASE OF SAID SECOND TRANSISTOR BEING CON-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |