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Locking Device for Forms

Description: Patent for a locking device for forms that will not crush the edges of circular forms.
Date: August 27, 1912
Creator: Irvin, Thomas H.
Partner: UNT Libraries Government Documents Department

Doubletree Attachment

Description: Patent for a doubletree attachments. Illustration included.
Date: August 16, 1910
Creator: Ball, William Rossem
Partner: UNT Libraries Government Documents Department

Aerial Torpedo.

Description: Patent for an aerial torpedo. This device is well suited for automatic targeting without help from man.
Date: August 31, 1915
Creator: Saladiner, Joseph M.
Partner: UNT Libraries Government Documents Department
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