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Patent US3374340A successfully refreshed from Google Patents.
US3374340A
Expired / Lapsed
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Computation of parameters for traffic control systems
Assignee: SPX Technologies Inc
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Filing: 1963-07-03
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Granted: 1968-03-19
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Expires: 1983-07-03
Abstract
No abstract record available.
Inventors
- 👤 Jr John H Auer
- 👤 Jerry P Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:27
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/0104; G06; G06G; G06G7/00; G06G7/48; G06G7/76; G08G1/07; G08G1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A TRAFFIC MONITORING SYSTEM, AMPLIFIER MEANS HAVING AN INPUT AND AN OUPUT, MEANS RESPONSIVE TO TRAFFIC FLOW IN A FIRST PREDETERMINED DIRECTION FOR COUPLING A SIGNAL TO SAID INPUT HAVING A MAGNITUDE RELATED TO THE MAGNITUDE OF TRAFFIC FLOW IN SAID FIRST DIRECTION, VARIABLE MAGNITUDE SIGNAL FEEDBACK MEANS BETWEEN SAID OUTPUT AND SAID INPUT OF SAID AMPLIFIER MEANS, AND MEANS RESPONSIVE TO TRAFFIC FLOW IN A SECOND PREDETERMINED DIREC-
Claim 2
Dependent Claim
70 words
IN A TRAFFIC MONITORING SYSTEM, AMPLIFIER MEANS HAVING AN INPUT AND AN OUPUT, MEANS RESPONSIVE TO TRAFFIC FLOW IN A FIRST PREDETERMINED DIRECTION FOR COUPLING A SIGNAL TO SAID INPUT HAVING A MAGNITUDE RELATED TO THE MAGNITUDE OF TRAFFIC FLOW IN SAID FIRST DIRECTION, VARIABLE MAGNITUDE SIGNAL FEEDBACK MEANS BETWEEN SAID OUTPUT AND SAID INPUT OF SAID AMPLIFIER MEANS, AND MEANS RESPONSIVE TO TRAFFIC FLOW IN A SECOND PREDETERMINED DIREC-
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |