|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 = '156') AND (category.subclass = '423') ORDER BY date ASC, patent, type|
Total of 2 patents found where: Class is '156'; Subclass is '423';
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||1,719,989||July 9, 1929||Method of and Apparatus for Assembling Insulators
Method of assembling the shells, holding downward pressure, and vibrating to settle cement around the shells to eliminate air
|MOORE, JR., Stewart L.
||Manufacturing||Locke Insulator Corp.|
|U||2,010,934||August 13, 1935||Cementing Process and Apparatus
Apparatus to align the pin during the cementing process in a suspension insulator
|SMITH, William A.
||Manufacturing||The Ohio Brass Co.|
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