Counties
Year
Month
1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Pipe-Tongs.
Patent for pipe tongs used for rotary well boring machinery. The tongs are designed to be carried with and used by rotary machines.
Date:
February 13, 1912
Creator:
Johnston, Horace G.
System:
The Portal to Texas History