Inventor

MARSCH WALTER

3 patents

⚠️ This page may combine multiple inventors who share the name “MARSCH WALTER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BERGWERKSVERBAND GMBH

2 patents

US4362440ADec 7, 1982

Tubular lost borehole closure

BERGWERKSVERBAND GMBH30 citations88

US4146094AMar 27, 1979

Tubular one-way closure for injecting a material into a hole

BERGWERKSVERBAND GMBH5 citations53

BWZ BERG IND TECH

1 patent

US4286482ASep 1, 1981

Device for positioning anchorage means

BWZ BERG IND TECH16 citations66