AMERICAN TRANSFORMER COMPANY innovation strategy

Patent filings in countries

#	Country	Total Patents
#1	United States	24

#	Industry
#1	Electrical machinery and energy
#2	Control
#3	Machine tools
#4	Measurement
#5	Machines

#	Technology
#1	Magnets and transformers
#2	Systems for regulating electrical variables
#3	Soldering, welding and flame cutting
#4	Measuring electric variables
#5	Unspecified technologies
#6	Measuring volume
#7	AC and DC conversion devices
#8	Electrically-conductive connections
#9	Special electric heating or lighting

Publication	Filing date	Title
US2388996A	1944-10-04	Voltage regulator
US2380300A	1942-01-01	Process of fabricating transformers
US2282450A	1941-05-08	Brush rigging for electrical apparatus
US2292514A	1940-10-08	Control apparatus for electrical circuits
US2242105A	1939-08-24	Lamp dimming system
US2197254A	1939-05-23	Arc welding system
US2207248A	1938-06-01	Electromagnetic controlling means
US2197253A	1937-11-13	Arc welding system
US2142188A	1936-12-02	Protective bushing for electrical apparatus
US2089434A	1936-10-06	Voltage regulator
US2118554A	1936-06-24	Inductive rectifier
US2085255A	1935-12-26	Voltage regulator
US2114143A	1935-12-19	Voltage regulator
US2097327A	1935-11-30	Arc welding system
US2059217A	1935-10-26	Built-in junction box for transformers
US2087906A	1935-03-13	Transformer core clamping means
US1932456A	1932-11-05	Electrical connecting means for inclosed transformers
US1988589A	1932-11-05	Closure means for a transformer casing
US1926660A	1931-04-01	Apparatus for measuring electrical impulse frequency
US1957681A	1931-04-01	Apparatus for measuring fluidflow