Electronic calculating machine

Details Electronic calculating machine Electronic calculating machine

1975-06-26

1977-08-09

Burke, Wallace R.

Printing and office machinery

Printing equipment

Hand held or manipulated

D1801

Patent

active

D02453410

REFERENCES:
patent: D218993 (1970-10-01), Kitai
patent: D220587 (1971-04-01), Metzner et al.
patent: D223301 (1972-04-01), Link
patent: D230405 (1974-02-01), Jinbo
patent: D232833 (1974-09-01), Kitai et al.
patent: D233154 (1974-10-01), Saito
patent: D233442 (1974-10-01), Saito

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