|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 = '172') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '172';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||894,201||July 28, 1908||Insulator
Pin with a threaded wooden block making up one-half of the thimble and metal projection on the other side contacting the threads to keep the wooden half pressed against the pinhole
|HALLETT, Thomas E.
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