30 Utility Patents
#411 in Houston, TX
#3,274 in Texas
#47,662 in US
#92,155 in the World
Forward Citations = 343
Company Filing History:
Hydril USA Manufacturing LLC
Hydril USA Distribution LLC

4. 2 out of 51,840

5. 1 out of 832,540 patents
Other
where one patent can have more than one assignee
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