6 Utility Patents
#32 in Warrenville, IL
#13,127 in Illinois
#337,561 in US
#698,502 in the World
Forward Citations = 131
Company Filing History:

American Telephone & Telegraph Co., At&t Bell Laboratories
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#32 in Warrenville, IL
#13,127 in Illinois
#337,561 in US
#698,502 in the World
Company Filing History:

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