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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 = '187') ORDER BY date ASC, patent, type

Total of 8 patents found where: Class is '174'; Subclass is '187';

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T / S Patent Date Description Patentee Category Assigned To
 1914
U 1,106,797 August 11, 1914 Electric Insulator
Suspension insulators
FAY, John L.
WAY, Sylvester B.
Suspension  
 1922
U 1,406,696 February 14, 1922 Self-Cooling Strain Insulator
Electrose strain insulator
STEINBERGER, Louis
Strain  
U 1,406,697 February 14, 1922 Self-Cooling Strain Insulator
Electrose strain insulator
STEINBERGER, Louis
Strain  
 1923
U 1,447,359 March 6, 1923 Ventilated Line Insulator
Electrose pintype insulator with holes in the center to ventilate and reduce heat
STEINBERGER, Louis
Electrose  
U 1,468,042 September 18, 1923 Column Strain Insulator
Electrose strain insulator
STEINBERGER, Louis
Strain  
U 1,468,043 September 18, 1923 Insulator Supporting Pin
Electrose pin
STEINBERGER, Louis
Pin  
U 1,468,044 September 18, 1923 Line Insulator
Metal thimble in Electrose pintype insulator and internal cavity to cool insulator
STEINBERGER, Louis
Electrose  
 1927
U 1,654,047 December 27, 1927 Strain Insulator
Strain insulator with steel covering whereby the porcelain insulator is in compression
LAPP, John S.
Strain Lapp Insulator Co.

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