Reading machine for advancing and displaying reading material fo

Details Reading machine for advancing and displaying reading material fo Reading machine for advancing and displaying reading material fo

1981-05-05

1983-11-22

Feifer, Melvin B.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Holder or file

D19 59, D1907

Patent

active

D02715007

REFERENCES:
patent: D175325 (1955-08-01), Suestka
patent: D262637 (1982-01-01), Monick
patent: 1172943 (1916-02-01), Collins
patent: 2747547 (1956-05-01), Drasher
patent: 2774498 (1956-12-01), Seaver
patent: 3030923 (1962-04-01), Abseck et al.
patent: 3748023 (1973-07-01), Nelson
patent: 4136472 (1970-01-01), Delvo

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