3 Matching Results
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Ointment.
Patent for a general external application ointment made of chloride of zinc, powdered metallic cobalt, blood root, and glycerine.
Date:
April 4, 1922
Creator:
Mullins, Ervin L. & Collier, William R.
System:
The Portal to Texas History
Calipers.
Patent for calipers that make it easier to read measurements, by having a strip of measuring tape at the ends that allows users to determine the distance between the arms easier. The measuring tape component is also retractable.
Date:
April 4, 1922
Creator:
Miller, William James
System:
The Portal to Texas History
Universal Household Grater.
Patent for a new universal grater which eliminates the risk of injury the user may gain from grating materials.
Date:
April 4, 1922
Creator:
Lambdin, William McKendree
System:
The Portal to Texas History