August, 1984
***
Patent US3530781 – Transformer Housing and Vented Cover Assembly -(September 29, 1970)
http://www.google.vu/patents/US3530781?printsec=abstract#v=onepage&q&f=false
~
Thank you David and Shannen for the link.
.
August, 1984
***
Patent US3530781 – Transformer Housing and Vented Cover Assembly -(September 29, 1970)
http://www.google.vu/patents/US3530781?printsec=abstract#v=onepage&q&f=false
~
Thank you David and Shannen for the link.
.