RESERVE HOLDING CO innovation strategy

Patent filings in countries

#	Industry
#1	Telecommunications
#2	Electrical machinery and energy
#3	Audio-visual technology
#4	Control
#5	Engines, pumps and turbines
#6	Transport
#7	Digital networks

#	Technology
#1	Selecting
#2	Telephonic communication
#3	Electric switches
#4	Circuits for supplying electric power
#5	Alarm systems
#6	Loudspeakers and microphones
#7	Guiding railway traffic
#8	Supplying combustion engines
#9	Installation of electric cables
#10	Digital information transmission

Publication	Filing date	Title
US1834649A	1931-01-02	Telephone system
US1813007A	1930-08-23	Automatic telephone system
US1815198A	1930-05-26	Automatic telephone system
US1811445A	1930-04-30	Multioffice telephone system
US1811444A	1930-04-19	Toll service trunking system
US1807968A	1930-03-28	Telephone system
US1837440A	1930-02-17	Trackway device
US1837236A	1930-02-03	Impulse sender
US1830678A	1929-11-25	Telephone system
US1824194A	1929-09-26	Relay control circuit
US1836492A	1929-09-26	Calling device
US1805140A	1929-09-05	Voltage regulating system
US1804575A	1929-07-05	Telephone system
US1810330A	1929-06-03	Zone metering system
US1798477A	1929-05-31	Multioffice telephone system
US1805726A	1929-05-08	Automatic telephone system
US1812985A	1929-05-02	Testing apparatus
US1757101A	1929-04-06	Telephone system
US1775489A	1929-03-30	Signaling system
US1776653A	1929-03-14	Telephone system