FR844672A - Improvements made to tuning indicators and similar devices as well as to electrical devices incorporating them - Google Patents

Improvements made to tuning indicators and similar devices as well as to electrical devices incorporating them

Info

Publication number
FR844672A
FR844672A FR844672DA FR844672A FR 844672 A FR844672 A FR 844672A FR 844672D A FR844672D A FR 844672DA FR 844672 A FR844672 A FR 844672A
Authority
FR
France
Prior art keywords
well
improvements made
electrical devices
incorporating
tuning indicators
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR844672A publication Critical patent/FR844672A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/14—Magic-eye or analogous tuning indicators
FR844672D 1937-10-13 1938-10-13 Improvements made to tuning indicators and similar devices as well as to electrical devices incorporating them Expired FR844672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL205234X 1937-10-13

Publications (1)

Publication Number Publication Date
FR844672A true FR844672A (en) 1939-07-31

Family

ID=19778514

Family Applications (1)

Application Number Title Priority Date Filing Date
FR844672D Expired FR844672A (en) 1937-10-13 1938-10-13 Improvements made to tuning indicators and similar devices as well as to electrical devices incorporating them

Country Status (5)

Country Link
US (1) US2225479A (en)
CH (1) CH205234A (en)
FR (1) FR844672A (en)
GB (1) GB519263A (en)
NL (1) NL50269C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089485B (en) * 1952-07-16 1960-09-22 Standard Elektrik Lorenz Ag Voltage and voltage comparison indicator tubes

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR937437A (en) * 1946-12-24 1948-08-17 Csf Variable magnification electron microscope voltage divider
FR937296A (en) * 1947-06-21 1948-08-12 Csf Improvements to focusing devices, for electron microscopes
US2922073A (en) * 1955-03-22 1960-01-19 Kendon Electronics Inc Color reproduction systems of the cathode ray tube type
US2859378A (en) * 1956-05-21 1958-11-04 Gen Electric Electrode system for cathode ray tubes
GB1205565A (en) * 1966-09-28 1970-09-16 Rank Organisation Ltd Improvements in or relating to electron guns

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089485B (en) * 1952-07-16 1960-09-22 Standard Elektrik Lorenz Ag Voltage and voltage comparison indicator tubes

Also Published As

Publication number Publication date
CH205234A (en) 1939-06-15
GB519263A (en) 1940-03-20
NL50269C (en)
US2225479A (en) 1940-12-17

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