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Compound Engine. (open access)

Compound Engine.

Patent for certain new and useful improvements in compound engines, including instructions and illustrations.
Date: June 20, 1899
Creator: Johnson, Willie H.
System: The Portal to Texas History
Acetylene-Gas Generator. (open access)

Acetylene-Gas Generator.

Patent for a new and useful acetylene gas generator, including instructions and illustrations.
Date: May 30, 1899
Creator: Camp, Charles M.
System: The Portal to Texas History