'Hall Mark' Continuous Contact Electric Copier
- maker:
- B J Hall and Company Limited
"Hall Mark" continuous contact electric copier patent No. 170967 made by B.J. Hall & Co. Ltd., London, c. 1925.
Details
- Category:
- Photographic Technology
- Object Number:
- 1982-497
- type:
- copier
- credit:
- Flander, E.J.
