Compensating ring for a down hole hammer
A Standard patent application filed on 23 October 1989 credited to Elsby, John ; Dewar, John Urquhart ; Sanfead, Brian Thomas ; Greathead, Andrew

Details

Application number :

43643  

Application type :

Standard  

Application status :

EXPIRED  

Under opposition :

No  

Proceeding type :

 

Invention title :

Compensating ring for a down hole hammer  

Inventor :

Elsby, John ; Dewar, John Urquhart ; Sanfead, Brian Thomas ; Greathead, Andrew  

Agent name :

Madderns  

Address for service :

GPO Box 2752 ADELAIDE SA 5001  

Filing date :

23 October 1989  

Associated companies :

 

Applicant name :

Sandvik RC Tools Australia Pty Limited  

Applicant address :

47-51 Vulcan Road, Canning Vale WA 6155 Australia  

Old name :

DTA Digger Tools Pty Ltd ; Drilling Tools Australia Pty Ltd ; SDS Digger Tools Pty Ltd  

Original Source :

Go