Resource Type

Month

Automatic lock. (open access)

Automatic lock.

Patent for a gate lock that automatically locks.
Date: March 24, 1924
Creator: Parker, Robert N.
System: The Portal to Texas History
Gas Burner (open access)

Gas Burner

Patent for a gas burner. Illustration included.
Date: March 29, 1904
Creator: Bryant, Henry
System: The Portal to Texas History