NL167857B - FILTER DEVICE. - Google Patents

FILTER DEVICE.

Info

Publication number
NL167857B
NL167857B NL7708810.A NL167857DA NL167857B NL 167857 B NL167857 B NL 167857B NL 167857D A NL167857D A NL 167857DA NL 167857 B NL167857 B NL 167857B
Authority
NL
Netherlands
Prior art keywords
filter device
filter
Prior art date
Application number
NL7708810.A
Other languages
Dutch (nl)
Original Assignee
Chemap Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL167857B publication Critical patent/NL167857B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/45—Charge-storage screens exhibiting internal electric effects caused by electromagnetic radiation, e.g. photoconductive screen, photodielectric screen, photovoltaic screen
    • H01J29/458—Charge-storage screens exhibiting internal electric effects caused by electromagnetic radiation, e.g. photoconductive screen, photodielectric screen, photovoltaic screen pyroelectrical targets; targets for infrared or ultraviolet or X-ray radiations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
NL7708810.A 1952-03-03 FILTER DEVICE. NL167857B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1072113X 1952-03-03

Publications (1)

Publication Number Publication Date
NL167857B true NL167857B (en)

Family

ID=19868369

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7708810.A NL167857B (en) 1952-03-03 FILTER DEVICE.

Country Status (3)

Country Link
BE (1) BE518130A (en)
FR (1) FR1072113A (en)
NL (1) NL167857B (en)

Also Published As

Publication number Publication date
BE518130A (en)
FR1072113A (en) 1954-09-08

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