Resource Type

Month

Heater for Gaseous Fluids. (open access)

Heater for Gaseous Fluids.

Patent for "an attachment for use in connection with internal combustion engines whereby heavy oil...may be advantageously used as fuel" (lines 9-12) including instructions and illustrations.
Date: March 16, 1915
Creator: Anderau, Joseph Engelbert
System: The Portal to Texas History
Game-Counter (open access)

Game-Counter

Patent for an apparatus designed to maintain a record of points earned and the number of rounds played in a game. Illustrations included.
Date: March 22, 1910
Creator: McKinney, Ansel
System: The Portal to Texas History