Resource Type
Counties
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Fan Attachment for Dental Engines
Patent for a fan attachment for dental engines. Illustration included.
Date:
January 3, 1911
Creator:
Frisbie, Jonathan S.
System:
The Portal to Texas History
Planter
Patent for planter that allows grain to be platned in a straight line.
Date:
January 16, 1917
Creator:
Gruben, Edward J.
System:
The Portal to Texas History
Seed-Dropping Plate
Patent for a versatile seed dropping mechanism that retains the seed shells as they drop to prevent machine clogging and seed droppings.
Date:
January 25, 1916
Creator:
Grinstead, Albert N.
System:
The Portal to Texas History