Inventor

IWASAKI OSAMI

JP3 patents

Patents

3 patents

US5205694AApr 27, 1993

Self-tapping screw

TOPURA KK70 citations92

US5249882AOct 5, 1993

Self-tapping screw

TOPURA KK46 citations88

US5203657AApr 20, 1993

Self-tapping screw

TOPURA KK30 citations88