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 = '427') AND (category.subclass = '181') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '427'; Subclass is '181';
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 |
1934 | ||||||
U | 1,975,576 | October 2, 1934 | Method of Applying a Conducting Coating on Insulators RFI coating of carbon fused to the surface |
HAWLEY, Kent A. |
RFI | Locke Insulator Corp. |
1939 | ||||||
U | 2,170,602 | August 22, 1939 | Method of Producing Glass Building Blocks Bonding agent applied to mortar bearing block sides |
BAUER, John E. |
OI | Owens-Illinois Glass Co. |
Total of 0.00 seconds