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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '174') AND (category.subclass = '41') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '174'; Subclass is '41';

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T / S Patent Date Description Patentee Category Assigned To
U 279,289 June 12, 1883 Telegraph and Telephone Line
Use of copper wire instead of iron and crossarms between poles to keep the wires separated
VALE, Theodore N.
U 2,912,482 November 10, 1959 Aerial Cable Support and Spacer
Support and spacer for multiple electrical power lines
HORROCKS, Raymond G.
MILLER, Carroll de V.
BRENNER, Theodore J.
Spacer PLM Products, Inc.
U Specimen known 3,268,655 August 23, 1966 High Voltage Cable Spacer Insulator Device
Aerial spacer to hold three high voltage conductors and keep them spaced apart.
HAIGH, William Francis
MCMAHON, Chester
MCMAHON, Eugene Joseph
Spacer Fargo Manufacturing Co.

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