12 Utility Patents
#476 in San Mateo, CA
#44,293 in California
#162,458 in US
#328,363 in the World
Forward Citations = 225
Company Filing History:
Schlumberger Technology Corporation
Chevron U.s.a. Inc.

4. 1 out of 832,680 patents
Other
5. 1 out of 227

where one patent can have more than one assignee
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