Inventor
GRATHOFF HARTMUT
DE13 patents
⚠️ This page may combine multiple inventors who share the name “GRATHOFF HARTMUT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GUTEHOFFNUNGSHUETTE MAN
9 patentsUS5320471AJun 14, 1994
Suspension and guide of a vertical conveyor in the discharge trunk of a ship unloader
GUTEHOFFNUNGSHUETTE MAN29 citations92
US5632370AMay 27, 1997
Pivoting transfer means at belt conveyor
GUTEHOFFNUNGSHUETTE MAN8 citations73
US5501563AMar 26, 1996
Bulk material loading and unloading facility for sea-going ships
GUTEHOFFNUNGSHUETTE MAN14 citations73
US5238346AAug 24, 1993
Continuous-conveyance bulk-cargo ship unloader
GUTEHOFFNUNGSHUETTE MAN19 citations73
US5165757ANov 24, 1992
Method of strip mining
GUTEHOFFNUNGSHUETTE MAN16 citations73
US5305868AApr 26, 1994
Cover belt conveyor
GUTEHOFFNUNGSHUETTE MAN6 citations62
US5013201AMay 7, 1991
Traveling conveyor arrangement
GUTEHOFFNUNGSHUETTE MAN4 citations62
US4907932AMar 13, 1990
Continuous bulk material conveyer
GUTEHOFFNUNGSHUETTE MAN3 citations62
US5152583AOct 6, 1992
Continuous-operation extraction machinery for strip mining with a cylindrical extractor
GUTEHOFFNUNGSHUETTE MAN2 citations57