WIEGAND EDWIN L innovation strategy

Patent filings in countries

#	Country	Total Patents
#1	Canada	52
#2	United States	51

#	Industry
#1	Electrical machinery and energy
#2	Machines
#3	Thermal processes
#4	Chemical engineering
#5	Engines, pumps and turbines
#6	Consumer goods
#7	Materials and metallurgy

#	Technology
#1	Special electric heating or lighting
#2	Unspecified technologies
#3	Unspecified technologies
#4	Fluid heaters
#5	Shaping clay
#6	Supplying combustion engines
#7	Laundering textiles
#8	Magnetic or electrostatic solid separation
#9	Building materials
#10	Resistors

Publication	Filing date	Title
US2322988A	1941-02-06	Electric heating
US2315031A	1940-11-02	Valve means
US2230440A	1939-09-07	Electrical heating means
US2284078A	1939-08-28	Method of making electrical heating units
US2235305A	1939-07-04	Process of classification and separation of material particles
US2272282A	1939-03-21	Electrical heating element
US2139786A	1937-11-19	Electrical heating element
US2170176A	1937-11-12	Heating means
US2178823A	1937-10-05	Heating means
US2213510A	1937-06-23	Apparatus for classification and separation of material particles
US2139785A	1937-04-19	Electrical heating element and method of making same
US2158601A	1937-04-13	Electrical heating apparatus and method of making the same
US2158605A	1937-04-13	Heating apparatus
US2123294A	1936-08-27	Electric heating apparatus
US2158600A	1935-09-07	Heating unit and method of making the same
US2075686A	1935-09-07	Heating
US2170174A	1935-08-26	Electric resistance heating element
US2080647A	1934-10-06	Method of insulating electrical resistor heating elements
US1994676A	1933-11-16	Electrical heating unit
US1985965A	1932-01-08	Electric resistance heating element