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Adjustable Book-Cover.

Description: Patent for adjustable book covers. More protection with use of thicker paper, with adjustable feature is highly important as is also the slit and tongue.
Date: July 1, 1919
Creator: Walraven, Albert T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Holder.

Description: Patent for improved book holder for holding down the leaves of an open book which can be adjusted to fit various widths.
Date: July 2, 1918
Creator: Duckett, J. L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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