FR973104A - Differential device - Google Patents

Differential device

Info

Publication number
FR973104A
FR973104A FR973104DA FR973104A FR 973104 A FR973104 A FR 973104A FR 973104D A FR973104D A FR 973104DA FR 973104 A FR973104 A FR 973104A
Authority
FR
France
Prior art keywords
differential device
differential
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
Marcel Wattenne
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 filed Critical
Application granted granted Critical
Publication of FR973104A publication Critical patent/FR973104A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/62—Holders for the original
    • G03B27/6207—Holders for the original in copying cameras
    • G03B27/6214—Copy boards

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR973104D 1948-10-08 1948-10-08 Differential device Expired FR973104A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR973104T 1948-10-08

Publications (1)

Publication Number Publication Date
FR973104A true FR973104A (en) 1951-02-07

Family

ID=9516470

Family Applications (1)

Application Number Title Priority Date Filing Date
FR973104D Expired FR973104A (en) 1948-10-08 1948-10-08 Differential device

Country Status (1)

Country Link
FR (1) FR973104A (en)

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