25 Utility Patents
#555 in Houston, TX
#4,290 in Texas
#62,630 in US
#122,153 in the World
Forward Citations = 900
Company Filing History:

Dresser Industries, Inc.
Halliburton Company
4. 1 out of 50

5. 1 out of 392
Western Atlas International, Inc.
where one patent can have more than one assignee
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