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Film Developing, Fixing, and Washing Apparatus
Patent for a film developing, fixing, and washing apparatus with an improved method of rolling the film around the coil in the washing tank.
Date:
July 2, 1912
Creator:
Nyc, Frederick Francis
System:
The Portal to Texas History
Internal-Combustion Engine
Patent for an improved internal combustion engine. Among the improvements, it allows "compounding the expansion effect to obtain the highest possible efficiency." ( lines 11-13)
Date:
January 16, 1912
Creator:
Pearson, Samuel
System:
The Portal to Texas History