Revision as of 23:10, 27 April 2020 by Sethile(talk | contribs)(Created page with "We have the following patent drawing, courtesy of Doug Valitchka. If you any additional information, please add it here, or send it to sethile.pipes@gmail.com and we can add i...")
We have the following patent drawing, courtesy of Doug Valitchka. If you any additional information, please add it here, or send it to sethile.pipes@gmail.com and we can add it for you.