Rail-Joint (open access)

Rail-Joint

Patent for a rail joint.
Date: April 21, 1903
Creator: Hauptmann, Alexis
System: The Portal to Texas History
Meter. (open access)

Meter.

Patent for a meter measuring the flow of liquid with a dial indicating gallons per hour for use in vehicles with internal combustion engines.
Date: April 21, 1914
Creator: Carroll, William G.
System: The Portal to Texas History