|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 = '245') ORDER BY date ASC, patent, type|
Total of 2 patents found where: Class is '156'; Subclass is '245';
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||2,234,391||March 11, 1941||Method of Manufacturing Electric Insulators
Method of making station post insulators with metal caps
|TAYLOR, John J.
||Insulator||The Ohio Brass Co.|
|U||2,261,583||November 4, 1941||Method of Making Hollow Forms
Method of casting hollow forms
|HEMPHILL, James R.
||Manufacturing||The Colonial Insulator Co.|
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