Apparatus for obtaining annular cavity in the bottom of drilled holes made in any type of medium
A Standard patent application filed on 30 December 1986 credited to Sanchez Velasco, Vicente

Details

Application number :

67032  

Application type :

Standard  

Application status :

EXPIRED  

Under opposition :

No  

Proceeding type :

 

Invention title :

Apparatus for obtaining annular cavity in the bottom of drilled holes made in any type of medium  

Inventor :

Sanchez Velasco, Vicente  

Agent name :

Griffith Hack  

Address for service :

GPO Box 1285 MELBOURNE VIC 3001  

Filing date :

30 December 1986  

Associated companies :

 

Applicant name :

Sanchez Velasco, Vicente  

Applicant address :

Canillas, 93-40-A Madrid Spain  

Old name :

 

Original Source :

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