Gas separation: apparatus – Magnetic separating means
Patent
1975-01-27
1976-09-14
Welsh, John D.
Gas separation: apparatus
Magnetic separating means
96 15, 340173TP, 346 74TP, 178 66TP, 346 77E, G03G 1600
Patent
active
039804763
ABSTRACT:
There is disclosed an imaging system for forming a plurality of images on the same surface, at least one of which is permanent and one of which is erasable. The imaging system includes an electro-optic imaging member which has a "built-in" master image.
REFERENCES:
patent: 3716359 (1973-02-01), Sheridon
Mitchell John B.
Ralabate James J.
Shanahan Michael H.
Welsh John D.
Xerox Corporation
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