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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 = '65') AND (category.subclass = '178') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '65'; Subclass is '178';

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T / S Patent Date Description Patentee Category Assigned To
U 771,557 October 4, 1904 Apparatus for Screening Liquid Clay
miscellaneous apparatus for screening liquid clay
LOCKE, Fred M.
U 3,224,857 December 21, 1965 Apparatus for Homogenzing Molten Glass in a Forehearth
Method of stirring colorants into glass batch
BRUMM, Carl E.
PITHER, Leslie F.
OI Owens-Illinois Glass Co.

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