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Oil drilling rig Patent from 1916

Oil Drilling Rig patent drawing from 1916 . You are free to use the patents on your website. Please credit www.patentswallart.com

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Uploaded on March 21, 2015

Oil drilling rig Patent from 1916

Oil Drilling Rig patent drawing from 1916 . You are free to use the patents on your website. Please credit www.patentswallart.com

2,386 views
0 faves
0 comments
Uploaded on March 21, 2015
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