FR1428035A - Improvements to luminous dials - Google Patents

Improvements to luminous dials

Info

Publication number
FR1428035A
FR1428035A FR3344A FR3344A FR1428035A FR 1428035 A FR1428035 A FR 1428035A FR 3344 A FR3344 A FR 3344A FR 3344 A FR3344 A FR 3344A FR 1428035 A FR1428035 A FR 1428035A
Authority
FR
France
Prior art keywords
dials
luminous
luminous dials
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
FR3344A
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.)
Saunders Roe and Nuclear Enterprises Ltd
Original Assignee
Saunders Roe and Nuclear Enterprises Ltd
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 Saunders Roe and Nuclear Enterprises Ltd filed Critical Saunders Roe and Nuclear Enterprises Ltd
Priority to FR3344A priority Critical patent/FR1428035A/en
Application granted granted Critical
Publication of FR1428035A publication Critical patent/FR1428035A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
FR3344A 1965-01-26 1965-01-26 Improvements to luminous dials Expired FR1428035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR3344A FR1428035A (en) 1965-01-26 1965-01-26 Improvements to luminous dials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR3344A FR1428035A (en) 1965-01-26 1965-01-26 Improvements to luminous dials

Publications (1)

Publication Number Publication Date
FR1428035A true FR1428035A (en) 1966-02-11

Family

ID=8569280

Family Applications (1)

Application Number Title Priority Date Filing Date
FR3344A Expired FR1428035A (en) 1965-01-26 1965-01-26 Improvements to luminous dials

Country Status (1)

Country Link
FR (1) FR1428035A (en)

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