Resource Type

Boat Propeller (open access)

Boat Propeller

Patent for a boat propeller. Illustration included.
Date: January 1, 1907
Creator: Edgar, Samuel Nooley
System: The Portal to Texas History
Recording Door-Lock (open access)

Recording Door-Lock

Patent for "a continuous-recording lock suitable for bonded warehouses, factories, stores, public buildings, offices &c., and by a slight modification applicable, also, for private residences" (lines 7-11).
Date: January 1, 1889
Creator: Ferguson, George J.
System: The Portal to Texas History