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US1834251A
(en)
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Electrical discharge device
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US1684947A
(en)
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Vacuum discharge apparatus
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US2150723A
(en)
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Spabk plug |
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US3855491A
(en)
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Hollow cathode discharge lamp for generating radiation characteristic of the gas fill within the envelope
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US2096199A
(en)
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Spark plug
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US2048023A
(en)
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Dual purpose thermionic tube
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US2485496A
(en)
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Electrical igniter
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US2006466A
(en)
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Mercury vapor lamp
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US2252538A
(en)
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Soldering iron
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GB375851A
(en)
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Improvements in and relating to electric discharge devices
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GB530491A
(en)
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Improvements in thermionic electrodes, more particularly for electric discharge lamps
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US2084772A
(en)
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Sodium vapor lamp
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US3202852A
(en)
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Arc initiator for plasma generator
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US1986462A
(en)
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Electrode
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US2114536A
(en)
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Directly heated cathode electrode
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US1707275A
(en)
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Vacuum-tube device
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SU332956A1
(2)
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GB372526A
(en)
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Improvements in or relating to electric discharge tubes provided with a metal sleeve
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GB433437A
(en)
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Improvements in electric discharge tubes
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US2276046A
(en)
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Rectifier anode
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GB346585A
(en)
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Improvements in or relating to resistance welding electrodes
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US1943250A
(en)
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Anode grid structure
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Sugiura et al.
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Use of a lime cathode of carbon in spectroscopy |
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US1971916A
(en)
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Gaseous discharge lamp
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GB469631A
(en)
|
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Improvements in gas or vapour-filled electric discharge tubes and in devices comprising such tubes
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