Membership
Tour
Register
Log in
Bernardus Timmer
Follow
Person
Borgercompagnie 181, NL
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for adapting the composition of a drilling flu...
Patent number
4,255,269
Issue date
Mar 10, 1981
Bernardus Timmer
E21 - EARTH DRILLING MINING