25 Utility and 1 Design Patents
#27 in Carlisle, MA
#3,263 in Massachusetts
#62,570 in US
#121,998 in the World
rank by utility patentsForward Citations = 423
Company Filing History:
Sierra Research and Technology, Inc.


4. 3 out of 832,492 patents
Other
5. 2 out of 2
Hybrid Technology Corporation
where one patent can have more than one assignee
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