Posted by dan m [162.158.78.187] on Monday, February 19, 2018 at 13:39:34 :
In Reply to: Re: Swivel Frame Dan Mininger posted by Clint Dixon [172.68.90.97] on Monday, February 19, 2018 at 13:21:25 :
read these.
willock patent 1943 https://patents.google.com/patent/US2366166
truckstell patent 1956 https://patents.google.com/patent/US2840389
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