GB1316704A - Overhead projector - Google Patents

Overhead projector

Info

Publication number
GB1316704A
GB1316704A GB2349971A GB2349971A GB1316704A GB 1316704 A GB1316704 A GB 1316704A GB 2349971 A GB2349971 A GB 2349971A GB 2349971 A GB2349971 A GB 2349971A GB 1316704 A GB1316704 A GB 1316704A
Authority
GB
United Kingdom
Prior art keywords
rollers
holders
april
overhead projector
guidance
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
GB2349971A
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.)
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
Publication of GB1316704A publication Critical patent/GB1316704A/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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Projection Apparatus (AREA)
GB2349971A 1970-04-13 1971-04-19 Overhead projector Expired GB1316704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19707013986 DE7013986U (de) 1970-04-13 1970-04-13 Schreibprojektor.

Publications (1)

Publication Number Publication Date
GB1316704A true GB1316704A (en) 1973-05-16

Family

ID=6610935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2349971A Expired GB1316704A (en) 1970-04-13 1971-04-19 Overhead projector

Country Status (4)

Country Link
DE (1) DE7013986U (enExample)
DK (1) DK128134B (enExample)
FR (1) FR2083285A5 (enExample)
GB (1) GB1316704A (enExample)

Also Published As

Publication number Publication date
FR2083285A5 (enExample) 1971-12-10
DE7013986U (de) 1970-08-27
DK128134B (da) 1974-03-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee