About 2 results
https://drivepatents.com/patents/1016126 · 2 Feb 2011
The present invention is directed to a portable welding-type power source including a removable energy storage device configured to provide a first voltage output and a boost circuit connected to the energy storage device and configured to boost the first ...
https://drivepatents.com/patents/1077367 · 1 Jun 2005
The present invention is directed to a portable welding-type power source (10) including a removable energy storage device (26) configured to provide a first voltage output and a boost circuit (36) connected to the energy storage device (26) and configured...