CH561431A5 - - Google Patents

Info

Publication number
CH561431A5
CH561431A5 CH321473A CH321473A CH561431A5 CH 561431 A5 CH561431 A5 CH 561431A5 CH 321473 A CH321473 A CH 321473A CH 321473 A CH321473 A CH 321473A CH 561431 A5 CH561431 A5 CH 561431A5
Authority
CH
Switzerland
Application number
CH321473A
Original Assignee
Basf Ag
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
Priority claimed from DE19727208770 external-priority patent/DE7208770U/de
Priority claimed from DE19732304110 external-priority patent/DE2304110A1/de
Application filed by Basf Ag filed Critical Basf Ag
Publication of CH561431A5 publication Critical patent/CH561431A5/xx

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
    • 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
    • G03B19/00—Cameras
    • G03B19/18—Motion-picture cameras
    • 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
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • G03B21/50—Control devices operated by the film strip during the run
    • G03B21/52—Control devices operated by the film strip during the run by prepared film

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Projection Apparatus (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Electrically Operated Instructional Devices (AREA)
CH321473A 1972-03-08 1973-03-05 CH561431A5 (ja�@�@)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19727208770 DE7208770U (de) 1972-03-08 1972-03-08 Vorrichtung zur bildhoeheneinstellung fuer einen filmprojektor
DE19732304110 DE2304110A1 (de) 1973-01-27 1973-01-27 Filmprojektor, insbesondere fuer lehrgeraete

Publications (1)

Publication Number Publication Date
CH561431A5 true CH561431A5 (ja�@�@) 1975-04-30

Family

ID=25764598

Family Applications (1)

Application Number Title Priority Date Filing Date
CH321473A CH561431A5 (ja�@�@) 1972-03-08 1973-03-05

Country Status (6)

Country Link
US (1) US3829206A (ja�@�@)
JP (1) JPS48102618A (ja�@�@)
CH (1) CH561431A5 (ja�@�@)
FR (1) FR2175496A5 (ja�@�@)
GB (1) GB1417516A (ja�@�@)
IT (1) IT979755B (ja�@�@)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0504930B1 (en) * 1991-03-22 1998-06-10 Nikon Corporation Optical apparatus for correcting image deviation
CN113838318A (zh) * 2020-06-23 2021-12-24 福建润邦智能科技有限公司 一种高度可调式便于安装固定的教学智能化设备

Also Published As

Publication number Publication date
US3829206A (en) 1974-08-13
FR2175496A5 (ja�@�@) 1973-10-19
GB1417516A (en) 1975-12-10
IT979755B (it) 1974-09-30
JPS48102618A (ja�@�@) 1973-12-24

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Legal Events

Date Code Title Description
PL Patent ceased
PL Patent ceased