P

Inventor

EKWALL BERNDT

SE8 patents
⚠️ This page may combine multiple inventors who share the name “EKWALL BERNDT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

UNIROC AB

3 patents
US5992545ANov 30, 1999

Down-the-hole drilling machine

UNIROC AB10 citations71
US5318140AJun 7, 1994

Fluid operated drill apparatus

UNIROC AB18 citations69
US5279371AJan 18, 1994

Down-the-hole drilling machine

UNIROC AB12 citations69

ATLAS COPCO ROCKTECH AB

2 patents
US5488998AFeb 6, 1996

Fluid driven down-the-hole drilling machine

ATLAS COPCO ROCKTECH AB11 citations71
US5375670ADec 27, 1994

Drill string component for drilling with a liquid driven drilling machine

ATLAS COPCO ROCKTECH AB13 citations71

ATLAS COPCO AB

1 patent
US4871035AOct 3, 1989

Damping device for a percussion rock drilling machine

ATLAS COPCO AB19 citations80

ATLAS COPCO SECOROC AB

1 patent
US7757779B2Jul 20, 2010

Compressed air percussive mechanism for a down hole hammer and down hole hammer

ATLAS COPCO SECOROC AB5 citations57

ATLAS COPCO ROCK DRILLS AB

1 patent
US5787995AAug 4, 1998

Water driven hammer device

ATLAS COPCO ROCK DRILLS AB5 citations57