FR2083220A5 - - Google Patents

Info

Publication number
FR2083220A5
FR2083220A5 FR7109695A FR7109695A FR2083220A5 FR 2083220 A5 FR2083220 A5 FR 2083220A5 FR 7109695 A FR7109695 A FR 7109695A FR 7109695 A FR7109695 A FR 7109695A FR 2083220 A5 FR2083220 A5 FR 2083220A5
Authority
FR
France
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
FR7109695A
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR2083220A5 publication Critical patent/FR2083220A5/fr
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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/022—Draughting machines or drawing devices for keeping parallelism automatic

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Drawing Aids And Blackboards (AREA)
FR7109695A 1970-04-09 1971-03-19 Expired FR2083220A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19707013649 DE7013649U (de) 1970-04-09 1970-04-09 Schreibprojektor.

Publications (1)

Publication Number Publication Date
FR2083220A5 true FR2083220A5 (de) 1971-12-10

Family

ID=6610881

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7109695A Expired FR2083220A5 (de) 1970-04-09 1971-03-19

Country Status (5)

Country Link
CH (1) CH513423A (de)
DE (1) DE7013649U (de)
DK (1) DK125937B (de)
FR (1) FR2083220A5 (de)
SE (1) SE371504B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI88214C (fi) * 1987-12-30 1993-04-13 Educatek Oy Bildkastare

Also Published As

Publication number Publication date
DK125937B (da) 1973-05-21
DE7013649U (de) 1970-08-20
SE371504B (de) 1974-11-18
CH513423A (de) 1971-09-30

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Legal Events

Date Code Title Description
ST Notification of lapse