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Water-Heater
Patent for a water heater that will heat a large quantity of water in a short amount of time. Cool water is delivered to the bottom of the tank, displacing hot water at the top so the tank is always filled with hot water.
Date:
September 14, 1920
Creator:
Faust, Louis F.
Object Type:
Patent
System:
The Portal to Texas History
Fastening Device for Fence-Wires.
Patent for improved fence posts that holds wires on metallic posts.
Date:
September 7, 1920
Creator:
Minnich, Otto J.
Object Type:
Patent
System:
The Portal to Texas History
Smithsons Valley Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date:
1920
Creator:
United States. Army. Corps of Engineers.
Object Type:
Map
System:
The Portal to Texas History