SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (category = 'Hole') ORDER BY last_name ASC, first_name, date, patent, type |
Total of 2 patents found where: Category is 'Hole';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
DE LONG, Harry A. | ||||||
U | 1,055,322 | March 11, 1913 | Insulator Holes (2) through insulator to pin allows lightning to pass to pin & ground |
DE LONG, Harry A. |
Hole | |
HOPKINS, Roy S. | ||||||
U | 1,206,846 | December 5, 1916 | Insulator Hole in crown with mercury receiving ends of line wires & clamp |
HOPKINS, Roy S. |
Hole |
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