| 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 = '228') AND (category.subclass = '903') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '228'; Subclass is '903';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1940 | ||||||
| U | 2,198,578 | April 30, 1940 | Double Glazing Double pane window glass with aluminum seal |
HAZELTON, Benjamin F. ZIMMERMAN, Willard P. HOLMES, Minot K. |
OI | Owens-Illinois Glass Co. |
| 1941 | ||||||
| U | 2,264,152 | November 25, 1941 | Method of Forming a Metallic Surface on Ceramic Bodies RFI metallic coating that strongly adheres to the insulator |
ROWLAND, Davidge H. |
RFI | Locke Insulator Corp. |
| 1962 | ||||||
| U | 3,054,704 | September 18, 1962 | Insulator Assembly Method and Apparatus Suspension, method of sealing cement to improve strength during curing |
RUOFF, George M. |
Suspension | A. B. Chance Co. |
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