2 Utility and 8 Design Patents
#323 in Chicago, IL
#1,228 in Illinois
#17,439 in US
#31,030 in the World
rank by design patentsForward Citations = 74
Company Filing History:

Teletype Corporation
At&t Teletype Corporation
4. 1 out of 832,540 patents
Other
5. 1 out of 386

where one patent can have more than one assignee
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