2 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Keirsey, George F."  
Results: 1 - 2

Gripping Device for Well-Boring Apparatus

Description: Patent for a gripping device for well-boring apparatus that allows the rotary gripping rings to be reversed and used as new when one side has been worn down completely including illustrations and instructions.
Date: June 15, 1915
Creator: Myers, George S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Drill-Collar.

Description: Patent for a new design for collars to be used on water-flushed rotary drills, including instructions and illustrations.
Date: March 16, 1915
Creator: Myers, George S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen