Electronic intercommunication unit

Details Electronic intercommunication unit Electronic intercommunication unit

1983-04-29

1986-09-16

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 52, D14 60, D14 57

Patent

active

D02856816

REFERENCES:
patent: D184548 (1959-03-01), Waltman
patent: D199677 (1964-01-01), Mattingly
patent: D202707 (1965-11-01), Kloss
patent: D210026 (1968-01-01), Kahn
patent: D211092 (1968-05-01), Kahn
patent: D243536 (1977-03-01), van de Poel
patent: D259422 (1981-06-01), Taylor
patent: D269432 (1983-06-01), Kowalik et al.
patent: D269780 (1983-07-01), Doodson
patent: D271694 (1983-12-01), Nomura
Lafayette 1977 Catalog, p. 64, Model 46617, 2 Way Electron. Intercom., p. 66; Model TS-10 Automatic Elect. Tel, Answer, & Recording Instrument.
Telesis Fall 1973, vol. 3, No. 3; Article re Loudspeaking Phones; at p. 83, Fig. 4, New Companion Phone Set.

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