DRIVER HARRIS CO innovation strategy

Patent filings in countries

#	Industry
#1	Materials and metallurgy
#2	Electrical machinery and energy
#3	Thermal processes
#4	Semiconductors
#5	Machines

Publication	Filing date	Title
US2864694A	1956-03-13	Alloys assistant to salt baths
US2839396A	1956-02-10	Alloy
US2859264A	1954-08-06	Thermocouple element composition
US2757221A	1954-07-06	Thermocouple element composition
US2909209A	1954-05-24	Apparatus for making helical electric resistance heating wire coils and provided with a rotary mandrel and a pressing roll having an elastically deformable coil embracing surface
US2691690A	1952-08-22	Thermocouple element composition
US2687956A	1951-12-28	Alloy
US2687954A	1951-10-19	Alloy
US2696544A	1951-07-31	Electric resistance alloy
GB690241A	1950-10-11	Improvements in nickel chromium iron alloys
US2621033A	1949-12-17	Conveying disk for heat-treating furnaces
US2581420A	1949-09-23	Alloys
US2587275A	1949-09-23	Furnace element
US2586768A	1949-02-24	Vacuum tube electrode element
US2533735A	1948-12-16	Electric resistance element and method of heat-treatment
US2533736A	1948-12-16	Electric resistance element and method of heat-treatment
GB621343A	1947-02-19	Improvements relating to electrical resistance elements and alloys for use therein
US2460590A	1946-05-11	Electric resistance element and method of heat-treatment
GB610840A	1946-01-14	Improvements in chromium-nickel-iron alloys
US2408771A	1944-01-01	Austenitic chromium-nickel-iron alloy