Improvements in or relating to vacuum gauges on the mcleod principle
GB153585A
An improved device for airtight-jointing metal vapour rectifiers and like vacuum vessels
US1413685A
Polyphase choking coils for rectifiers
US1381077A
Automatic-starting apparatus for metal-vapor rectifiers
US1377282A
Apparatus for measuring the vacuum in large rectifiers
US1369984A
Metal vapor-rectifier
US1551970A
Heavy-current relay
GB167652A
Improvements in heavy current relays
US1367098A
Apparatus for protecting metal-vapor rectifiers
GB139756A
Improvements in apparatus for protecting metal-vapour rectifiers
DE322855C
Convex anode for metal vapor rectifier
DE319119C
Device for voltage regulation of electrical converters
DE336975C
Choke coils for the parallel connection of several anodes of a mercury vapor rectifier
DE319852C
Equipment on metal vapor rectifiers, in which an insulating intermediate piece is inserted into the metal pipe connection leading from the metal vacuum vessel to the permanently connected air pump
