Direct station telephone selector

Details Direct station telephone selector Direct station telephone selector

1989-12-11

1991-03-19

Fay, Jr., Horace B.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

D14150, D14142, D14151

Patent

active

D03155641

REFERENCES:
patent: D266086 (1982-07-01), Foggin et al.
patent: D271763 (1983-12-01), Brown et al.
patent: D282745 (1986-02-01), Brown
patent: D289723 (1987-01-01), Kido
patent: D300028 (1989-02-01), To
patent: D300029 (1989-02-01), Kido et al.
patent: D303801 (1989-10-01), Kido et al.
patent: D306859 (1990-03-01), Helstals et al.
patent: D307588 (1990-01-01), Barken et al.

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