US D585,838 S
Power switching device
Larry E. Tiedemann, Winona, Minn. (US); Robert A. Pape, Winona, Minn. (US); and James P. Hentges, Fountain City, Wis. (US)
Assigned to Watlow Electric Manufacturing Company, St. Louis, Mo. (US)
Filed on Mar. 09, 2007, as Appl. No. 29/273,696.
Term of patent 14 Years
LOC (9) Cl. 13 - 03
U.S. Cl. D13—158  [D13/147]
OG exemplary drawing
 
The ornamental design for a power switching device, as shown and described.