Inventor

MACHIDA MITSUHISA

JP3 patents

Patents

3 patents

US6164171ADec 26, 2000

Screwdriver used for screw tightener and screw suitably tightened by the screwdriver

MAX CO LTD19 citations90

US7029220B2Apr 18, 2006

Band shaped connected screws with inverse screw threads

MAX CO LTD13 citations82

US7530458B2May 12, 2009

Connecting fastener

MAX CO LTD4 citations58