311 August 15, 1881.] THE OPEKATOB, LICENSED MANUFACTURERS OF AMERICAN BELL TELEPHONE CO. Manufacturers of all kinds of Telegraph, Telephone and Electric Light Supplies. NEW NO. 2 MAGNETO BELL. Standard No. 1 Magneto Bell, 20,000 in use. … PONT CROWN TELEPHONE. NO EXTRA CHARGE. No posts on front. Connection made at top and bottom of Bells. POST & CO.'S ."jth. All Bells tested to not less than 12,000 ohms resist- ance. 0th.. We have so arranged the RINGER, GENERATOR, and FRAME work of our Bells thac they can be easily ad- justed…
Telegraph -- Periodicals
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