Luminescent backing sheet for reading and writing in the dark

Details Luminescent backing sheet for reading and writing in the dark Luminescent backing sheet for reading and writing in the dark

1975-04-11

1976-08-31

Borchelt, Archie R.

Radiant energy

Luminophor irradiation

Self-luminous article

250486, 35 37, H01J 162

Patent

active

039783405

ABSTRACT:
A phosphorescent backing sheet for use in underlying relation with light transmitting writing sheets, drawing sheets or sheets having reading or other intelligible matter thereon in lines thick enough to permit a person to read in the dark as well as write in the dark.

REFERENCES:
patent: 2413459 (1946-11-01), Lynch
patent: 3879611 (1975-04-01), Schroeder

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