[Trade Journal]
Publication: Electrical World
New York, NY, United States
vol. 8, no. 16, p. 196, col. 1
OUR ILLUSTRATED RECORD OF ELECTRICAL PATENTS.
PATENTS DATED SEPT. 28, 1886.
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349,788. Insulator; N. T. Fitch, Chicago, Ill. The invention consists in imbedding a screw or other fastening device within the body of insulating material, so as to form one complete fastening.
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| 349,788. Insulator. |
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