Resource Type

Tube-Clamp (open access)

Tube-Clamp

Patent for a tube clamp for holding pipe sections in wells.
Date: May 21, 1912
Creator: Krauskope, Oscar
System: The Portal to Texas History
Fly-Trap (open access)

Fly-Trap

Patent for an insect trap for flies. Illustrations included.
Date: December 24, 1912
Creator: Krueger, Samuel
System: The Portal to Texas History