Search the Insulator Patent Reference Library:

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

Total of 1 patents found where: Category is 'Tree Insulator';

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
 1933
U 1,937,764 December 5, 1933 Insulator
Self-tying tree insulator with mounting lag screw and convoluted metal wire clip cemented in the porcelain insulator designed such that the insulator is turned to allow the conductor to be dropped in the slot between the ends of the wire clip and then the
KYLE, William D.
Tree Insulator Line Material Co.

Total of 0.01 seconds