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 = '414') AND (category.subclass = '744.7') ORDER BY patent ASC, type |
Total of 2 patents found where: Class is '414'; Subclass is '744.7';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1941 | ||||||
U | 2,259,728 | October 21, 1941 | Apparatus for Making Hollow Glass Building Blocks Machine for making glass block |
BRIDGES, Donald A. |
OI | Owens-Illinois Glass Co. |
1958 | ||||||
U | 2,821,158 | January 28, 1958 | Machine for Coating Bell-Shaped Electrical Suspension Insulators Machine for automatically glazing suspension insulators and applying a sanded band for cementing the metal cap. |
BROWN, Leonard MIGLIORINI, Vincent T. LENZ, Carl SMITLEY, Wayne C. |
Manufacturing | General Electric Co. |
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