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Improvements in Apparatus for Concentrating Acid
Patent for an apparatus for concentrating acid. This apparatus relates to concentrating weak acid taken from petroleum sludge.
Date:
October 10, 1911
Creator:
Gray, Elisha Burritt
System:
The Portal to Texas History
Steam-Feed.
Patent for an improved steam feed for use in sawmill carriage feeds.
Date:
October 3, 1911
Creator:
Black, Lee J.
System:
The Portal to Texas History