Portable filing case made of wood, covered with li
Portable filing case made of wood, covered with light and dark brown fabric, containing three trays made of phenol formaldehyde for holding slides or cards,with "UNIFILE"and PATENT PENDING and four logos showing two filing systems and the letters "B &J" on the inside of each tray, 1920-1940
- Plastics and Modern Materials
- Object Number:
- portable filing case
- Frangenberg, Tomas
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