| 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 = '174') AND (category.subclass = '27') ORDER BY date ASC, patent, type |
Total of 4 patents found where: Class is '174'; Subclass is '27';
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 |
| 1878 | ||||||
| U | 199,506 | January 22, 1878 | Improvement in Insulating Underground Telegraph Wires Underground cable insulated by wrapping with cotton, hemp, or jute and saturating it with paraffin and inserting the wires in heated metal pipes flushed with air to remove moisture. |
BROOKS, David |
Cable | |
| 1882 | ||||||
| U | 252,857 | January 24, 1882 | Insulator for Telegraph Wires Insulators strung on wires to separate groups of wires in a tube |
GORE, Charles L. |
Insulator | 1/4 to John Townsend |
| 1934 | ||||||
| U | 1,977,957 | October 23, 1934 | Bus Bar and Bushing Connection Connector to hold bus bar inside a bushing |
STEVENS, Leland S. |
Bushing | Locke Insulator Corp. |
| U | 1,978,649 | October 30, 1934 | Bus Bar and Bushing Connection Connector to hold bus bar inside a bushing |
ROBERTS, Charles W. |
Bushing | Locke Insulator Corp. |
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