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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 = '24') AND (category.subclass = '135A') ORDER BY date ASC, patent, type

Total of 4 patents found where: Class is '24'; Subclass is '135A';

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T / S Patent Date Description Patentee Category Assigned To
 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.)
 1933
U 1,901,349 March 14, 1933 270 Degree Clamp
Bracket or clamp for high tension suspension insulator used to redirect the conductor 270 degrees in another direction. Clamps also found with patent 2,111,505.
LAPP, John S.
Suspension Lapp Insulator Co., Inc.
 1938
U 2,111,505 March 15, 1938 Method of Making a Forged Clamp
Method of making the curved dead-end clamp described in patent 1,901,345.
CARD, Charles S.
Suspension The Brewer-Titchener Corp.
U 2,139,415 December 6, 1938 Strain or Suspension Clamp
A combined strain and suspension clamp
MCLACHLAN, Alexander
Suspension Jeffery Dewitt Insulator Co.

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