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| INTERCOM WALL TELEPHONES
Group 3
Taken from the Ericsson Telephone Catalogue 1903 |
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Last revised: October 11, 2019FM2 |
|
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| INTERCOM WALL TELEPHONES
Group 3
Taken from the Ericsson Telephone Catalogue 1903 |
||||||||||||||||||||||||
Last revised: October 11, 2019FM2 |
Inter-Communication Switch for Metallic Lines, to be used in connection with
a Magneto-Ringing Telephone Instrument.