PUPIN MICHAEL I innovation strategy

Patent filings in countries

#	Industry
#1	Digital networks
#2	Electrical machinery and energy
#3	Telecommunications
#4	Basic communication technologies

#	Technology
#1	Digital information transmission
#2	Cables and insulators
#3	Antennas
#4	Magnets and transformers
#5	AC and DC conversion devices
#6	Generation of oscillations
#7	Transmission
#8	Telephonic communication

Publication	Filing date	Title
US1336378A	1915-10-01	Antenna with distributed positive resistance
US1388441A	1915-10-01	Multiple antenna for electrical wave transmission
US1334165A	1915-09-17	Electric-wave transmission
US768301A	1903-06-13	Wireless electrical signaling.
GB190216529A	1902-07-25	Improvements in Apparatus for Reducing Attenuation of Electrical Waves in Conductors or Cables
US697660A	1901-08-31	Winding-machine.
US652230A	1899-12-14	Art of reducing attenuation of electrical waves and apparatus therefor.
US713044A	1898-01-04	Method of producing asymmetrical currents from symmetrical alternating electromotive forces.
US707008A	1897-12-29	Multiple telegraphy.
US640516A	1895-05-28	Electrical transmission by resonance-circuits.
US640515A	1895-05-21	Art of distributing electrical energy by alternating currents.
US821741A	1895-01-28	Telegraphy.
US707007A	1894-02-23	Multiple telegraphy.