Resource Type
Counties
1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Device for Unscrewing and Withdrawing Pipe.
Patent for a device for unscrewing and withdrawing pipe from wells, mines, or other similar uses. This tool is attached at the end of a drill stem and threaded in the ordinary right hand direction to unscrew and withdraw.
Date:
July 29, 1919
Creator:
Fletcher, Harold W.
System:
The Portal to Texas History