Inventor
CHROMY FRANZ
8 patents
Patents
8 patentsUS4611670ASep 16, 1986
Motor driven drilling or chipping device
HILTI AG37 citations91
US4222443ASep 16, 1980
Motor-driven hammer drill
HILTI AG32 citations91
US4064949ADec 27, 1977
Electropneumatic hammer
HILTI AG26 citations80
US4051990AOct 4, 1977
Device for securing an expansion anchor
HILTI AG24 citations78
US4732219AMar 22, 1988
Hammer drill with pneumatically driven percussion piston
HILTI AG12 citations72
US4366869AJan 4, 1983
Hammer drill
HILTI AG15 citations72
US3996835ADec 14, 1976
Expansion anchor
HILTI AG8 citations72
US3951034AApr 20, 1976
Straddling dowel
HILTI AG5 citations61