FR731783A - Perfectionnements aux valves de lumière - Google Patents

Perfectionnements aux valves de lumière

Info

Publication number
FR731783A
FR731783A FR731783DA FR731783A FR 731783 A FR731783 A FR 731783A FR 731783D A FR731783D A FR 731783DA FR 731783 A FR731783 A FR 731783A
Authority
FR
France
Prior art keywords
refinements
light valve
valve
light
valve refinements
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
English (en)
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR731783A publication Critical patent/FR731783A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
FR731783D 1931-02-27 1932-02-25 Perfectionnements aux valves de lumière Expired FR731783A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US518741A US1895757A (en) 1931-02-27 1931-02-27 Translating device

Publications (1)

Publication Number Publication Date
FR731783A true FR731783A (fr) 1932-09-08

Family

ID=24065279

Family Applications (1)

Application Number Title Priority Date Filing Date
FR731783D Expired FR731783A (fr) 1931-02-27 1932-02-25 Perfectionnements aux valves de lumière

Country Status (2)

Country Link
US (1) US1895757A (fr)
FR (1) FR731783A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432328A (en) * 1943-07-16 1947-12-09 Gen Electric Current responsive time delay relay

Also Published As

Publication number Publication date
US1895757A (en) 1933-01-31

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