ATWATER KENT MFG CO innovation strategy

Patent filings in countries

#	Industry
#1	Basic communication technologies
#2	Audio-visual technology
#3	Electrical machinery and energy
#4	Telecommunications
#5	Machines
#6	Engines, pumps and turbines

#	Technology
#1	Loudspeakers and microphones
#2	Amplification control
#3	Amplifiers
#4	Demodulation
#5	Transmission
#6	Tuning resonant circuits
#7	Capacitors and switching devices
#8	Unspecified technologies
#9	Ignition for internal-combustion engines
#10	Magnets and transformers

Publication	Filing date	Title
US2042568A	1934-09-29	Refrigeration system
US2045091A	1934-08-14	Automatic tuning system for radio receivers
US2036709A	1934-04-16	Electrical shield
US2065257A	1934-04-11	Vacuum tube amplifier circuits
US2001076A	1934-02-28	Radio tuning apparatus
US1972279A	1933-09-13	Anode supply system
US1960599A	1933-06-21	Mechanical rectifier
US1971497A	1933-06-10	Ignition interference suppression
US1896825A	1931-11-05	Radio receiving system
US1872487A	1931-08-08	Radio receiving system
US1889018A	1931-07-29	Volume control
US1846616A	1931-04-04	Volume control
US1828688A	1931-02-25	Amplifying system
US1926173A	1931-01-21	Radio receiving system
US1915926A	1930-10-17	Sound reproducing system
US1849499A	1930-09-29	Condenser
US1888430A	1930-09-27	Radio receiving system
US1925828A	1930-09-10	Variable condenser
US1833085A	1930-08-18	Volume control
US1908381A	1930-08-01	Radio receiving system