|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 = '68') ORDER BY date ASC, patent, type|
Total of 3 patents found where: Class is '65'; Subclass is '68';
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||113,393||April 4, 1871||Improvement in the Mode of Making Telegraph Insulators
Press for making insulators leaving plunger in insulator
|R||9,392||September 28, 1880||Mode of Forming Insulators
Press for forming insulator and threaded pinhole (reissue of 103,555)
|BROOKFIELD, James M.
|U||807,459||December 19, 1905||Process of Forming Glass Articles
Threading process using fusible metal to form threads in glass before it melts
||Threads||1/3 to Harry P. Decker|
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