Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
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31/00
Cathode ray tubes; Electron beam tubes
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H01J31/08
having a screen on or from which an image or pattern is formed, picked up, converted, or stored
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H01J31/26
Image pick-up tubes having an input of visible light and electric output
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H01J31/28
with electron ray scanning the image screen
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H01J31/30
having regulation of screen potential at anode potential, e.g. iconoscope
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H01J31/32
Tubes with image amplification section, e.g. image-iconoscope, supericonoscope
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H01J31/32

Showerhead with interlaced gas feed and removal and methods of use
11189502 · 2021-11-30 · ·

Gas distribution modules comprising a housing with an upper plenum and a lower plenum are described. One of the upper plenum and lower plenum is in fluid communication with an inlet and the other is in fluid communication with an outlet. A plurality of upper passages connects the upper plenum to the bottom of the housing to allow a flow of gas to pass through and be isolated from the first plenum.