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Piano-Pedal.
Patent for a piano pedal made of one piece of cast metal to avoid the problem of loose connections between parts over time and which goes in a smaller hole in the bottom of the piano to prevent mice or dust from entering inside the piano.
Date:
June 18, 1907
Creator:
Norcross, Levi Watson
System:
The Portal to Texas History
Mold for Making Concrete Blocks and Artificial Stone
Patent for concrete molds that is lightweight, easily handled and transported. Illustrations included.
Date:
June 11, 1907
Creator:
Benton, William A.
System:
The Portal to Texas History