. Catalogue of Pierce & Co. manufacturers of and dealers in electrical supplies .... No. 20, 5 Ampere 21, 10 M \ ...... In ordering give No. of switch as well as capacity in amperes,. $ 384o O. D. PIERCE A CO., PHILADELPHIA, PA. SWITCHES. PERKINS SNAP SWITCHES. Double Pole*

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Keywords: ., bookcentury1800, bookdecade1890, booksubje, booksubjectdivision26