|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 = '425') AND (category.subclass = '352') ORDER BY specimen DESC, date, patent, type|
Total of 4 patents found where: Class is '425'; Subclass is '352';
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||474,496||May 10, 1892||Apparatus for Molding Earthenware, &c.
Press to form lateral indentions or wire grooves around the side of the insulator to such as for standard porcelain knobs
|U||1,717,996||June 18, 1929||Means for and Method of Making Insulators
Press method of molding porcelain insulator with vibration improves quality (Hewlett)
|MOORE, JR., Stewart L.
||Press||Locke Insulator Corp.|
|U||2,048,558||July 21, 1936||Insulator Plunging Machine
Plunging machine to form the shape of bushings and other insulators without the need for turning
|MOORE, Stewart L.
||Manufacturing||Locke Insulator Corp.|
|U||2,582,922||January 15, 1952||Apparatus for Molding Articles
Press that can be adapted for insulator manufacture
|CROWLEY, Henry L.
HOSSENLOPP, Arthur M.
|Press||Henry L. Crowley & Co., Inc.|
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