Improvements in installations including remote control transmissions, for the selective protection of electric networks
US2484374A
Apparatus for detecting breaks of synchronism between electric machines
GB631728A
Improvements in devices for measuring or comparing periodic functions
GB616706A
Improvements relating to the testing of electric meters
GB631866A
Improvements in regulating means for electrical power systems
GB596997A
Improvements in portable stroboscopic device for checking electric meters
GB631726A
Improvements in the selective protection of selections of an electric transmission line
GB631725A
Improvements in apparatus adapted to measure or compare sinusoidal functions, with particular reference to the actuation of protection devices for electrical distribution networks
FR977087A
Improvements made to methods and apparatuses of those for dispensing a fluid at a certain pressure
GB617234A
Improvements in devices for distributing the loads between the various power stations of a system of mains or between the various generators of a power station
GB462104A
Stroboscopic device for checking and adjusting electric meters
US2123115A
Stroboscopic device for checking and adjusting meters
DE569238C
Protection device for a section of a direct current network
US1854333A
Connection for feeding wattmetrical relays adapted to protect electric mains
US1903033A
Protecting device for electric distributing systems
GB291418A
Connection for feeding wattmetrical relays adapted to protect electric mains
GB296210A
Protective arrangements for electric distributing systems
DE460703C
Heat exchange device, in particular for heating air
CA485964A
Devices for the measurement and comparison of periodic functions
CA550767A
Phase comparators and electric line protection systems
