64 Utility Patents
#5 in Tomball, TX
#902 in Texas
#12,894 in US
#23,908 in the World
Forward Citations = 1,859
Company Filing History:


Weatherford/lamb, Inc.
4. 2 out of 461
Otis Engineering Corporation
5. 1 out of 1
Amfields, LP
where one patent can have more than one assignee
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