CA1147997A - Visionneuse plastique reployable pour diapositives 35mm. - Google Patents

Visionneuse plastique reployable pour diapositives 35mm.

Info

Publication number
CA1147997A
CA1147997A CA000391344A CA391344A CA1147997A CA 1147997 A CA1147997 A CA 1147997A CA 000391344 A CA000391344 A CA 000391344A CA 391344 A CA391344 A CA 391344A CA 1147997 A CA1147997 A CA 1147997A
Authority
CA
Canada
Prior art keywords
lens
slide
molded
section
hinges
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
CA000391344A
Other languages
English (en)
Inventor
John L. Head
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA000391344A priority Critical patent/CA1147997A/fr
Application granted granted Critical
Publication of CA1147997A publication Critical patent/CA1147997A/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
    • G02B27/04—Viewing or reading apparatus having collapsible parts

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
CA000391344A 1981-12-02 1981-12-02 Visionneuse plastique reployable pour diapositives 35mm. Expired CA1147997A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000391344A CA1147997A (fr) 1981-12-02 1981-12-02 Visionneuse plastique reployable pour diapositives 35mm.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000391344A CA1147997A (fr) 1981-12-02 1981-12-02 Visionneuse plastique reployable pour diapositives 35mm.

Publications (1)

Publication Number Publication Date
CA1147997A true CA1147997A (fr) 1983-06-14

Family

ID=4121541

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000391344A Expired CA1147997A (fr) 1981-12-02 1981-12-02 Visionneuse plastique reployable pour diapositives 35mm.

Country Status (1)

Country Link
CA (1) CA1147997A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549971A1 (fr) * 1983-07-26 1985-02-01 Lestrade Stereoscopes Appareil pour visionner des vues par transparence

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549971A1 (fr) * 1983-07-26 1985-02-01 Lestrade Stereoscopes Appareil pour visionner des vues par transparence

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Legal Events

Date Code Title Description
MKEX Expiry