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Driver Harris Co

Driver Har

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2533735A	Electric resistance element and method of heat-treatment	Expired / Lapsed	1948-12-16	1950-12-12	2	Details
US2533736A	Electric resistance element and method of heat-treatment	Expired / Lapsed	1948-12-16	1950-12-12	2	Details
US2036425A	Process of insulating wire and product thereof	Expired / Lapsed	1933-05-23	1936-04-07	0	Details
US1392416A	Method of producing compound metals	Expired / Lapsed	1919-12-27	1921-10-04	0	Details