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Improvement in Insect-Destroyers. (open access)

Improvement in Insect-Destroyers.

Patent for a device to destroy "winged insects which are destructive to the cotton plants and other vegetation" (lines 19-21) including instructions and illustrations.
Date: December 6, 1870
Creator: Byrne, Thomas; Strunk, Diedrich & Schott, J. J.
System: The Portal to Texas History
Spring-Washer for Piano-Flanges. (open access)

Spring-Washer for Piano-Flanges.

Patent for a spring washer for piano flanges that prevents the flanges from becoming loose over time.
Date: December 5, 1911
Creator: Mayor, Enoch Allen
System: The Portal to Texas History