3 Matching Results

This system will be undergoing maintenance June 27th between 9:00AM and 12:00PM CDT.

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Church, Wells L."  
Results: 1 - 3

Well-Drilling Apparatus.

Description: Patent for drilling well apparatuses that approximate the weight imposed so that the weight can be regulated to improve efficiency, including instructions and illustrations.
Date: April 28, 1914
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Roller-Drill

Description: Patent for a roller drill that has a roller spindle which is detachable.
Date: November 28, 1911
Creator: Hughes, Howard Robard
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Roller Drill.

Description: Patent for roller drills that will leave a central core standing in the hole being formed composed of six cutting rollers.
Date: November 28, 1911
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen