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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 = '264') AND (category.subclass = '86') ORDER BY date ASC, patent, type

Total of 5 patents found where: Class is '264'; Subclass is '86';

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T / S Patent Date Description Patentee Category Assigned To
 1928
U 1,679,345 August 7, 1928 Method and Apparatus for Casting Ceramic Pieces
Manufacturing method of casting bushings with a hollow core		 AUSTIN, Arthur O.
 Manufacturing The Ohio Brass Co.
U 1,693,429 November 27, 1928 Method of Casting
Manufacturing method to cast bushings with a hollow core		 AUSTIN, Arthur O.
 Manufacturing The Ohio Brass Co.
 1929
U 1,733,729 October 29, 1929 Method of Casting Link-Type Insulators
Manufacturing method to cast Hewlett type suspension disks		 GOUVERNEUR, Minor F. H.
STEVENS, Frank J.
 Manufacturing Locke Insulator Corp.
 1941
U 2,261,583 November 4, 1941 Method of Making Hollow Forms
Method of casting hollow forms		 HEMPHILL, James R.
 Manufacturing The Colonial Insulator Co.
 1959
U 2,898,658 August 11, 1959 Manufacture and Apparatus for the Manufacture of Ceramic Ware
Method of removing water through conduits in the mold when plastic clay is pressed in a mold.		 HARRY, William R.
 Mold McGraw-Edison Co.

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