Card – picture – or sign exhibiting – Changing exhibitor – Motor operated
Patent
1976-05-03
1978-06-06
Eickholt, E. H.
Card, picture, or sign exhibiting
Changing exhibitor
Motor operated
40573, 40576, 40502, G09F 1130, G09F 700
Patent
active
040927911
ABSTRACT:
An intelligence display apparatus comprising:
REFERENCES:
patent: 1636415 (1927-07-01), Greenawalt
patent: 2099243 (1937-11-01), Taaffe
patent: 3000125 (1961-09-01), Elvestrom
patent: 3082560 (1963-03-01), Elvestrom
Eickholt E. H.
Hoffman Martin P.
Nigohosian Leon
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