US D586,640 S
Bolt or nut tightening device
Yukio Torigai, Osaka (Japan); Shozo Matsumura, Osaka (Japan); and Takayoshi Obatake, Osaka (Japan)
Assigned to Maeda Metal Industries, Ltd., (Japan)
Filed on Oct. 04, 2007, as Appl. No. 29/295,711.
Claims priority of application No. 2007-009640 (JP), filed on Apr. 11, 2007.
Term of patent 14 Years
LOC (9) Cl. 08 - 05
U.S. Cl. D 8—69
OG exemplary drawing
 
The ornamental design for a bolt or nut tightening device, substantially as shown and described.