Switchboard for telecommunications switching system

Recording – communication – or information retrieval equipment – Computer – data processor equipment

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D1403

Patent

active

D02437732

REFERENCES:
patent: D211643 (1968-07-01), Kamp
patent: D214795 (1969-07-01), Bearse
patent: D214796 (1969-07-01), Bearse
patent: D224409 (1972-07-01), Janda
patent: 2559561 (1951-07-01), Micha
patent: 2949506 (1960-08-01), Abbott et al.

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