FR1157974A - Perfectionnements apportés aux visionneuses - Google Patents

Perfectionnements apportés aux visionneuses

Info

Publication number
FR1157974A
FR1157974A FR1157974DA FR1157974A FR 1157974 A FR1157974 A FR 1157974A FR 1157974D A FR1157974D A FR 1157974DA FR 1157974 A FR1157974 A FR 1157974A
Authority
FR
France
Prior art keywords
viewers
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.)
VOLOMAT ETS
Original Assignee
VOLOMAT ETS
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 VOLOMAT ETS filed Critical VOLOMAT ETS
Application granted granted Critical
Publication of FR1157974A publication Critical patent/FR1157974A/fr
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR1157974D 1956-09-12 1956-09-12 Perfectionnements apportés aux visionneuses Expired FR1157974A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1157974T 1956-09-12

Publications (1)

Publication Number Publication Date
FR1157974A true FR1157974A (fr) 1958-06-05

Family

ID=9650869

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1157974D Expired FR1157974A (fr) 1956-09-12 1956-09-12 Perfectionnements apportés aux visionneuses

Country Status (1)

Country Link
FR (1) FR1157974A (fr)

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