|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 = '69') ORDER BY date ASC, patent, type|
Total of 3 patents found where: Class is '65'; Subclass is '69';
View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.
|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||324,157||August 11, 1885||Method of Forming Screw Threads on Glass
Threads formed in glass (plunger remains in glass during annealing)
|PENNYCUICK, James G.
|U||836,298||November 20, 1906||Process of Making Glass Insulators or Other Glass Articles
Process covering patent 836,297: press, fully automatic operation, measuring molten glass to annealing
|BROOKFIELD, Henry M.
|U||2,972,211||February 21, 1961||Method of Manufacturing a Glass Insulator
Method of tempering glass insulators where the head is toughened more than the rest of the insulator
|JELLYMAN, Philip E.
MACINTOSH, Hamish Fraser
WILCOCK, John E.
|Glass||Pilkington Brothers Ltd.|
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