Down-the-hole hammer, percussion bit assembly and method of enlarging a hole
A Standard patent application filed on 06 February 2007 credited to Simmons, Rob A.
Details
Application number :
2007232500
Application type :
Standard
Application status :
SEALED
Under opposition :
No
Proceeding type :
Invention title :
Down-the-hole hammer, percussion bit assembly and method of enlarging a hole