Search the Insulator Patent Reference Library

Search the Insulator Patent Reference Library:

SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (last_name = 'ROBBINS') AND (first_name = 'Zenas C.') ORDER BY date ASC, patent, type

Total of 2 patents found where: Last Name is 'ROBBINS'; First Name is 'Zenas C.';

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
		1851
U	8,419	October 14, 1851	Insulator for Telegraph Wires Hook embedded in metal shell (with guta percha) for bolting	ROBBINS, Zenas C.	Hook
		1871
U	112,281	February 28, 1871	Improvement in Insulators for Telegraph Wires Hook, new shape	ROBBINS, Zenas C.	Hook

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