New York, NY, United States of America

American Telephone and Telegraph (at&t)


USPTO Granted Patents = 2

Forward Citations = 158

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3 inventors (with patents filed for the assignee):

goldMedal Charles Cruse Hayden (1 out of 3 patents)

silverMedal Gordon E Sylvester (1 out of 59 patents)

bronzeMedal David P Frost (1 out of 1 patent)


2 patents:

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USPTO Data Jan 1 1976 - Dec 9 2025

2 Patents

#2,090 in New York, NY

#5,647 in New York

#92,598 in US

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New York, NY, United States of America
Forward Citations = 158

3 inventors:

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