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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 = '470') AND (category.subclass = '53') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '470'; Subclass is '53';

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T / S Patent Date Description Patentee Category Assigned To
 1925
U 1,532,110 March 31, 1925 Apparatus for Assembling Nail Knobs
Machine for assembling nail-knobs		 LOY, John G.
 Knob Federal Porcelain Co.
 1926
U 1,589,939 June 22, 1926 Nail Knob Assembly
Machine to manufacture nail-knobs		 CASE, Francis M.
 Knob Federal Porcelain Co.
U 1,589,940 June 22, 1926 Nail Knob Assembling and Securing Machine
Machine to manufacture nail-knobs		 CASE, Francis M.
 Knob Federal Porcelain Co.

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