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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 = '425') AND (category.subclass = '151') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '425'; Subclass is '151';

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T / S Patent Date Description Patentee Category Assigned To
 1927
U 1,625,514 April 19, 1927 Apparatus for Forming Plastic Materials
Improved press to form insulator shape from wet process clay and cut in threaded pinhole		 AUSTIN, Arthur O.
MACLEOD, Donald Keith
 Press The Ohio Brass co.

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