25 Utility Patents
#1 in Par
#1,620 in United Kingdom
#122,288 in the World
Forward Citations = 586
Company Filing History:


Dowell, a Division of Schlumberger Technology Corporation
4. 2 out of 10,148
Schlumberger Technology Corporation
5. 1 out of 832,575 patents
Other
where one patent can have more than one assignee
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