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Arc-Lamp Attachment
Patent for improving arc lamp attachments. The attachment allows an arc lamp to be able to use an incandescent lamp in place of the electrodes in an arc lamp. The attachment increases the efficiency and durability of the arc lamp.
Date:
April 2, 1918
Creator:
Pratt, James R.
System:
The Portal to Texas History
Floor-Jack.
Patent for simple, affordable, and durable carpenters tongs that are made to push the boards of a floor or wall into place before nailing is done.
Date:
April 2, 1907
Creator:
Fleming, Henry C. & Royster, William F.
System:
The Portal to Texas History
Ant-Trap
Patent for "a simple device of this kind which will excel the former traps in depositing the ants within the annular pan and in efficiency for convenient discharge of the trapped insects" (lines 18-22).
Date:
April 2, 1901
Creator:
Inman, Joseph
System:
The Portal to Texas History