Inventor

GROSSBERNDT HERMAN

DE3 patents

Patents

3 patents

US6604901B1Aug 12, 2003

Self tapping screw

EJOT VERBINDUNGSTECH GMBH & CO49 citations93

US6158939ADec 12, 2000

Self tapping screw

EJOT VERBINDUNGSTECH GMBH & CO68 citations93

US6113331ASep 5, 2000

Self tapping screw for screwing into thermoplastics and the like

EJOT VERBINDUNGSTECH GMBH & CO19 citations90