US3127564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broadband gate comprising two balanced bridges canceling bias voltages at output andattenuating when off
Assignee: AT&T Inc
•
Filing: 1961-04-14
•
Granted: 1964-03-31
•
Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
- 👤 Adolf J Giger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:47
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/74; H03K17/76; H04; H04B; H04B1/00; H04B1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
AN ELECTONIC GATE COMPRISING A PAIR OF INPUT TERMINALS AND A PAIR OF OUTPUT TERMINALS, TWO BRIDGE NETWORKS EACH HAVING A FIRST, SECOND, THIRD AND FOURTH VERTEX, MEANS FOR RESPECTIVELY CONNECTING THE FIRST AND SECOND VERTICES OF ONE BRIDGE NETWORK TO ONE INPUT TERMINAL AND ONE OUTPUT TERMINAL, MEANS FOR RESPECTIVELY CONNECTING THE FIRST AND SECOND VERTICES OF THE OTHER BRIDGE NETWORK TO THE OTHER INPUT TERMINAL AND THE OTHER OUTPUT TERMINAL, A FIRST IMPEDANCE CONNECTING THE THIRD VERTICES OF EACH BRIDGE NETWORK TOGETHER, A SECOND IMPEDANCE CONNECTING THE FOURTH VERTICES OF EACH BRIDGE NETWORK TOGETHER, MEANS FOR APPLYING A BIAS OF REVERSIBLE POLARITY TO THE BRIDGE NETWORKS, MEANS ACTIVATED BY SAID BIAS FOR SHUNTING BOTH OF SAID FIRST AND SECOND IMPEDANCES WITH A RELATIVELY SMALL IMPEDANCE WITH RESPECT TO THE FIRST AND SECOND IMPEDANCES FOR ONE POLARITY OF SAID BIAS AND WITH A RELATIVELY LARGE IMPEDANCE WITH RESPECT TO THE FIRST AND SECOND IMPEDANCES FOR THE OTHER POLARITY OF SAID BIAS.
Claim 2
Dependent Claim
162 words
AN ELECTONIC GATE COMPRISING A PAIR OF INPUT TERMINALS AND A PAIR OF OUTPUT TERMINALS, TWO BRIDGE NETWORKS EACH HAVING A FIRST, SECOND, THIRD AND FOURTH VERTEX, MEANS FOR RESPECTIVELY CONNECTING THE FIRST AND SECOND VERTICES OF ONE BRIDGE NETWORK TO ONE INPUT TERMINAL AND ONE OUTPUT TERMINAL, MEANS FOR RESPECTIVELY CONNECTING THE FIRST AND SECOND VERTICES OF THE OTHER BRIDGE NETWORK TO THE OTHER INPUT TERMINAL AND THE OTHER OUTPUT TERMINAL, A FIRST IMPEDANCE CONNECTING THE THIRD VERTICES OF EACH BRIDGE NETWORK TOGETHER, A SECOND IMPEDANCE CONNECTING THE FOURTH VERTICES OF EACH BRIDGE NETWORK TOGETHER, MEANS FOR APPLYING A BIAS OF REVERSIBLE POLARITY TO THE BRIDGE NETWORKS, MEANS ACTIVATED BY SAID BIAS FOR SHUNTING BOTH OF SAID FIRST AND SECOND IMPEDANCES WITH A RELATIVELY SMALL IMPEDANCE WITH RESPECT TO THE FIRST AND SECOND IMPEDANCES FOR ONE POLARITY OF SAID BIAS AND WITH A RELATIVELY LARGE IMPEDANCE WITH RESPECT TO THE FIRST AND SECOND IMPEDANCES FOR THE OTHER POLARITY OF SAID BIAS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |