31 Utility and 1 Design Patents
#2 in Middleton, MA
#2,190 in Massachusetts
#43,251 in US
#83,291 in the World
rank by utility patentsForward Citations = 533
Company Filing History:

Picturetel Corporation

4. 3 out of 8
Sifly Aviation, Inc.
5. 2 out of 63

where one patent can have more than one assignee
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