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Book-Holding Device
Patent for a book-holding device that will keep books open by holding back turned pages, with illustrations.
Date:
April 20, 1920
Creator:
Barry, David Redmond
System:
The Portal to Texas History
Oil-Burner.
Patent for oil burner adapted for using heavy oil (with wide flat flame) for distribution (wide flat flame with adjustable burner tip).
Date:
April 26, 1921
Creator:
Chadbourne, Vaughn, R.
System:
The Portal to Texas History
Demountable Rim.
Patent for improved demountable rims for automobiles that are easy to mount and detach as well as cheaper and easier to manufacture.
Date:
April 27, 1920
Creator:
McPherson, Arthur Edison
System:
The Portal to Texas History