Resource Type
States
Counties
3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Non-Skid Device
Patent for a device that affixes to automobile wheels to provide tire traction and prevent skidding.
Date:
May 24, 1921
Creator:
Williams, Harry S.
System:
The Portal to Texas History
Toothbrush.
Patent for a new and improved toothbrush that has a rotary brush which turns while the user brushes it back and forth over their teeth and a hollow stem that sends water to the brush while it is in use.
Date:
November 2, 1920
Creator:
Simon, John
System:
The Portal to Texas History
Seed-Selecting Mechanism.
Patent for seed selecting mechanisms that plants or drops two seeds at the same time and can be attached to the hopper of a planter.
Date:
June 15, 1920
Creator:
Vest, Robert A.
System:
The Portal to Texas History