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 = '52') AND (category.subclass = '309.3') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '52'; Subclass is '309.3';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1958 | ||||||
U | 2,835,623 | May 20, 1958 | Method of Forming a Unitary Panel of Glass Blocks Pre-assembled glass block windows and skylight panels |
VINCENT, Harold B. MCDAVITT, Murray |
OI | Owens-Illinois Glass Co. |
1962 | ||||||
U | 3,070,474 | December 25, 1962 | Bonded Glass Surfaces and Method Therefore Masonry bonding grit for glass block |
SMITH, Robert M. |
OI | Owens-Illinois Glass Co. |
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