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Charles David Crawford
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Burlington, NC, US
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last 30 patents
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Patent Grant
Test apparatus for obtaining impedance settings for hybrid balance...
Patent number
4,096,361
Issue date
Jun 20, 1978
Bell Telephone Laboratories, Incorporated
Charles David Crawford
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Automatic cable balancing network
Patent number
4,096,362
Issue date
Jun 20, 1978
Bell Telephone Laboratories, Incorporated
Charles David Crawford
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical Gray to binary code converter
Patent number
4,055,841
Issue date
Oct 25, 1977
Bell Telephone Laboratories, Incorporated
Charles David Crawford
H03 - BASIC ELECTRONIC CIRCUITRY