Patent US3144625A successfully refreshed from Google Patents.
US3144625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attenuator system having end-terminated dissipative long line with input and output taps movable symmetrically to mid point
Assignee: Blonder Tongue Electronics
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Filing: 1963-02-08
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Granted: 1964-08-11
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Expires: 1983-02-08
Abstract
No abstract record available.
Inventors
- 👤 Isaac S Blonder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:01
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A WIDE-BAND SIGNAL ATTENUATOR SYSTEM HAVING, IN COMBINATION, A PAIR OF SIMILAR NETWORK LADDER ATTENUATORS EACH HAVING SUCCESSIVELY CONNECTED CASCADED #-NETWORKS OF SERIES AND SHUNT IMPEDANCE ELEMENTS, ONE END OF BOTH NETWORK LADDERS BEING CONNECTED TOGETHER BACK-TO-BACK AT COMMON TERMINALS TO PROVIDE THEREAT A RESULTANT PREDETERMINED CHARACTERISTIC IMPEDANCE AND EACH NETWORK HAVING CONTACT TERMINALS CONNECTED TO THE JUNCTIONS OF THE SAID SERIES AND SHUNT IMPEDANCE ELEMENTS THEREOF, A PAIR OF INPUT-SIGNAL AND OUTPUT TRANSMISSION LINES EACH OF THE SAID CHARACTERISTIC IMPEDANCE AND EACH HAVING A CONTACT MEMBER FOR ENGAGING THE CONTACT TERMINALS OF A CORRESPONDING NETWORK LADDER, AND MEANS FOR RELATIVELY MOVING THE CONTACT MEMBERS OF BOTH LINES AND THE SAID CORRESPONDING NETWORK LADDER CONTACT TERMINALS TO SUCCESSIVE CONTACT MEMBERS SPACED AWAY FROM THE SAID COMMON TERMINALS ALONG THE CORRESPONDING NETWORK LADDERS.
Claim 2
Dependent Claim
132 words
A WIDE-BAND SIGNAL ATTENUATOR SYSTEM HAVING, IN COMBINATION, A PAIR OF SIMILAR NETWORK LADDER ATTENUATORS EACH HAVING SUCCESSIVELY CONNECTED CASCADED #-NETWORKS OF SERIES AND SHUNT IMPEDANCE ELEMENTS, ONE END OF BOTH NETWORK LADDERS BEING CONNECTED TOGETHER BACK-TO-BACK AT COMMON TERMINALS TO PROVIDE THEREAT A RESULTANT PREDETERMINED CHARACTERISTIC IMPEDANCE AND EACH NETWORK HAVING CONTACT TERMINALS CONNECTED TO THE JUNCTIONS OF THE SAID SERIES AND SHUNT IMPEDANCE ELEMENTS THEREOF, A PAIR OF INPUT-SIGNAL AND OUTPUT TRANSMISSION LINES EACH OF THE SAID CHARACTERISTIC IMPEDANCE AND EACH HAVING A CONTACT MEMBER FOR ENGAGING THE CONTACT TERMINALS OF A CORRESPONDING NETWORK LADDER, AND MEANS FOR RELATIVELY MOVING THE CONTACT MEMBERS OF BOTH LINES AND THE SAID CORRESPONDING NETWORK LADDER CONTACT TERMINALS TO SUCCESSIVE CONTACT MEMBERS SPACED AWAY FROM THE SAID COMMON TERMINALS ALONG THE CORRESPONDING NETWORK LADDERS.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |