23 Utility Patents
#1 in Valenciennes
#1,694 in France
#138,545 in the World
Forward Citations = 224
Company Filing History:

Sumitomo Metal Industries, Inc.
Vallourec Drilling Products France
4. 3 out of 4
Vallourec Tube-alloy, Llc.
5. 3 out of 7
Vam Drilling France
where one patent can have more than one assignee
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