DK55200C
(en )
1938-09-12
Artificially cooled Mercury vapor discharge pipe.
FR796776A
(en )
1936-04-15
Electric discharge tube
DK54415C
(en )
1938-03-07
Electric Discharge Pipe.
FR789000A
(en )
1935-10-21
Electric discharge tube
DK54281C
(en )
1938-02-07
Electric Discharge Tube and Method for Manufacturing Such.
DK52633C
(en )
1937-02-01
Procedure for the manufacture of sheet metal, tape, tubes, rods and wires.
FR789706A
(en )
1935-11-05
Electric discharge tube
FR790768A
(en )
1935-11-27
Electric discharge tube
DK51485C
(en )
1936-04-06
Electrical Discharge Pipe and Procedure for Its Manufacture.
DK50892C
(en )
1935-11-11
Method for Manufacturing Indirect Heated Cathodes for Electric Discharge Containers.
DK56171C
(en )
1939-05-15
Electric Discharge Tube and Associated Base.
DK51234C
(en )
1936-02-03
Electrode for Electric Discharge Tubes and Procedure for Manufacturing the Electrode.
DK52072C
(en )
1936-08-31
Cathode for electric discharge pipes.
DK58967C
(en )
1941-08-25
Electrical Imaging Tube and Method for Manufacturing Its Retinal Electrode.
DK55172C
(en )
1938-09-05
Procedure for Smelting Tungsten Wire in Quartz.
DK54003C
(en )
1937-12-13
Electric Discharge Pipe.
DK52422C
(en )
1936-12-14
Electric Discharge Pipe.
DK51819C
(en )
1936-06-29
Electric Discharge Pipe.
DK51944C
(en )
1936-07-27
Electric Discharge Pipe.
DK57018C
(en )
1939-12-11
Electric Discharge Pipe.
DK51982C
(en )
1936-08-10
Electric Discharge Pipe.
DK52009C
(en )
1936-08-10
Electric Discharge Pipe.
DK52667C
(en )
1937-02-08
Electric Discharge Pipe.
CH182824A
(en )
1936-02-29
Electric discharge tube.
AT144991B
(en )
1936-03-25
Ion discharge amplifier tube.