Resource Type
States
Counties
2 Matching Results
Results open in a new window/tab.
Results:
1 - 2 of
2
Broom or Brush
Patent for metal brooms or brushes that are "strong and durable, relatively light in weight, and can be inexpensively manufactured" (line 13-15). It is intended for "sweeping snow, mud, slush, and the like" (line 16-17). The patent can also be applied for smaller version of metal brooms or brushes for other purposes.
Date:
March 16, 1915
Creator:
Airhart, Noah S.
System:
The Portal to Texas History
Electromagnetic Ore-Separator.
Patent for an electromagnetic ore separator, which reduces the risk of any valuable particles falling with the waste mineral material below the magnetic surface.
Date:
February 16, 1909
Creator:
Charlton, Thomas
System:
The Portal to Texas History