Inventor
Doll Zebula
US6 patents
Patents
6 patentsUS9757792B1Sep 12, 2017
Method for making a die for roll forming a dual threaded bolt
DOLL MARK5 citations79
US9950380B1Apr 24, 2018
Method for forming a dual threaded die
DOLL MARK2 citations69
US10232427B1Mar 19, 2019
Method for making a die for roll forming a dual threaded bolt
DOLL MARK1 citations68
US9643237B1May 9, 2017
Compound die for dual thread forming
DOLL MARK1 citations48
US10350670B1Jul 16, 2019
Method for making a dual threaded bolt roll forming die
DOLL MARK0 citations47
US10315244B1Jun 11, 2019
Method of forming a die for roll forming a dual threaded bolt
DOLL MARK0 citations47