Search the Insulator Patent Reference Library

SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Hole') ORDER BY date ASC, patent, type

Total of 2 patents found where: Category is 'Hole';

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
		1913
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
		1916
U	1,206,846	December 5, 1916	Insulator Hole in crown with mercury receiving ends of line wires & clamp	HOPKINS, Roy S.	Hole

Total of 0.00 seconds

Build your search criteria. The patent must match all the values specified.
Select patent types:	Utility Design Reissue
Patent number:
Date:
Year between:	and
Patentee starting with:
City:
State:
Assigned To starting with:
Description containing:
Category:
Class:	Subclass:
Click Search when complete: