Inventor
DROSTHOLM FREDE HILMAR
8 patents
Patents
8 patentsUS4081302AMar 28, 1978
Method for making tubular resin elements such as pipes
DROSTHOLM F H46 citations91
US4050865ASep 27, 1977
Brick press and associated equipment for making bricks
DROSTHOLM F H37 citations89
US3979250ASep 7, 1976
Apparatus for making continuous lengths of resin tubes
DROSTHOLM F H19 citations80
US4035128AJul 12, 1977
Brick press and associated equipment for making bricks
DROSTHOLM F H22 citations78
US4082597AApr 4, 1978
Method and apparatus for making continuous lengths of resin tubes
DROSTHOLM F H7 citations72
US4011354AMar 8, 1977
Method and apparatus for making tubular resin elements such as pipes
DROSTHOLM F H15 citations72
US3943224AMar 9, 1976
Method and apparatus for making continuous lengths of resin tubes
DROSTHOLM F H16 citations72
US4022669AMay 10, 1977
Equipment for cleaning solvents
DROSTHOLM F H3 citations50