FR410524A - Diascope apparatus intended to see photographic images in black or in color by transparency - Google Patents

Diascope apparatus intended to see photographic images in black or in color by transparency

Info

Publication number
FR410524A
FR410524A FR410524DA FR410524A FR 410524 A FR410524 A FR 410524A FR 410524D A FR410524D A FR 410524DA FR 410524 A FR410524 A FR 410524A
Authority
FR
France
Prior art keywords
diascope
transparency
black
color
photographic images
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)
Inventor
Lucien Herve
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.)
LUCIEN HERVE
Original Assignee
LUCIEN HERVE
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 LUCIEN HERVE filed Critical LUCIEN HERVE
Application granted granted Critical
Publication of FR410524A publication Critical patent/FR410524A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
    • G02B27/025—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies and magnifying means
FR410524D 1909-12-23 1909-12-23 Diascope apparatus intended to see photographic images in black or in color by transparency Expired FR410524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR410524T 1909-12-23

Publications (1)

Publication Number Publication Date
FR410524A true FR410524A (en) 1910-05-23

Family

ID=1454571

Family Applications (1)

Application Number Title Priority Date Filing Date
FR410524D Expired FR410524A (en) 1909-12-23 1909-12-23 Diascope apparatus intended to see photographic images in black or in color by transparency

Country Status (1)

Country Link
FR (1) FR410524A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457585A (en) * 1981-08-31 1984-07-03 Ducorday Gerard M Magnifier reader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457585A (en) * 1981-08-31 1984-07-03 Ducorday Gerard M Magnifier reader

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