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 = '251') ORDER BY description ASC, date, patent, type |
Total of 3 patents found where: Class is '65'; Subclass is '251';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1899 | ||||||
U | 622,270 | April 4, 1899 | Machine for Making Hollow Glassware Glass Press that can be adapted for insulator manufacture |
ROWE, John T. |
Misc | |
1915 | ||||||
U | 1,144,527 | June 29, 1915 | Mold Press for making glass insulators |
BROOKFIELD, Henry M. OLSEN, Sigward |
Press | Brookfield Glass Co. |
1939 | ||||||
U | 2,143,696 | January 10, 1939 | Apparatus for Assembling Hollow Building Blocks Semi automatic method for assembling glass blocks |
HOLMES, Minot K. JONES, David |
OI | Owens-Illinois Glass Co. |
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