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Improvement in Soldering-Irons. (open access)

Improvement in Soldering-Irons.

Patent for "an apparatus to be used with the common soldering-iron, whereby the same can be heated and kept heated continually while the iron is used." (Lines 6-9) Includes instructions and illustrations.
Date: December 19, 1871
Creator: Williams, Joseph
System: The Portal to Texas History