FR702770A - Device intended for the illumination of graduated scales of t receiving devices. s. f. and similar devices - Google Patents

Device intended for the illumination of graduated scales of t receiving devices. s. f. and similar devices

Info

Publication number
FR702770A
FR702770A FR702770DA FR702770A FR 702770 A FR702770 A FR 702770A FR 702770D A FR702770D A FR 702770DA FR 702770 A FR702770 A FR 702770A
Authority
FR
France
Prior art keywords
devices
illumination
device intended
graduated scales
receiving devices
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 FR702770A publication Critical patent/FR702770A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/02—Indicating arrangements
    • H03J1/04—Indicating arrangements with optical indicating means
    • H03J1/044—Illumination of the tuning dial; On and off switching of the illumination; Circuits related with illumination
FR702770D 1929-10-03 1930-09-29 Device intended for the illumination of graduated scales of t receiving devices. s. f. and similar devices Expired FR702770A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL357770X 1929-10-03

Publications (1)

Publication Number Publication Date
FR702770A true FR702770A (en) 1931-04-16

Family

ID=19785289

Family Applications (1)

Application Number Title Priority Date Filing Date
FR702770D Expired FR702770A (en) 1929-10-03 1930-09-29 Device intended for the illumination of graduated scales of t receiving devices. s. f. and similar devices

Country Status (3)

Country Link
BE (1) BE373768A (en)
FR (1) FR702770A (en)
GB (1) GB357770A (en)

Also Published As

Publication number Publication date
GB357770A (en) 1931-10-01
BE373768A (en)

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