Filter Kellogg by: key events (3) phones (10) catalogs (17) technical (7) brochures (5) educational (3)
Magneto Switchboards Bul. 10
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Magneto Switchboards Bul. 10
1915
Switchboards Bulletin 11
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Switchboards Bulletin 11
1915
PBX Switchboards
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PBX Switchboards
1916
Switchboards Bulletin 121
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Switchboards Bulletin 121
1926
Bltn 8X PBX Switchboards
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Bltn 8X PBX Switchboards
1928
Bltn #815: Selectophone
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Bltn #815: Selectophone
1947
No. 3 Toll Switchboard Bul. 5410
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No. 3 Toll Switchboard Bul. 5410
1954