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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 = '403') AND (category.subclass = '209') ORDER BY patent ASC, type

Total of 4 patents found where: Class is '403'; Subclass is '209';

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T / S Patent Date Description Patentee Category Assigned To
 1916
U 1,206,158 November 28, 1916 Safety Strain Insulator
Suspension made of Electrose with special interlocking links
STEINBERGER, Louis
Suspension  
 1918
U Specimen known 1,257,135 February 19, 1918 Guying-Pole
Cast iron member with three lugs for threadhing through guy cable on either side of the guy strain insulator which eliminates the need for clamps and is easier to install.
SHULL, Frederick G.
DE RIGHT, Elon J.
Guy Strain (marketed by the Shull Boltless Clamp Corp.)
U Specimen known 1,284,974 November 19, 1918 Strain Insulator
Strain, guy insulator attachment
AUSTIN, Arthur O.
Strain The Ohio Brass Co.
 1935
U 1,998,406 April 16, 1935 Insulator Suspension Hardware
Links for Hewlett type suspension disks
GOUVERNEUR, Minor F. H.
Suspension Locke Insulator Corp.

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