pdf AT&T Spec 4810, Dec 1927 - Stations Hand Telephone Sets Popular
By Paul F 2931 downloads
Spec_4810_Dec27_Station_Hand_Tel_Sets_ABC_Mountings_tci_ocr.pdf
A.T.&T. Specifications 4810, December 1927, Replacing Spec 4732 and Supplement A, 36 pages.
Includes Cording, Connections and Tests for E1A and E1B handserts used on A, B and C handset mountings, including A1-type, A2-type, A3-type, B1-type, B2-type, B3-type and C1-type mountings. (Mounting codes: A1, A2, A3, B1 and B2). OCR and bookmarks by Paul Fassbender.
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