GB1363026A - Support divice for overhead projector - Google Patents

Support divice for overhead projector

Info

Publication number
GB1363026A
GB1363026A GB3948972A GB3948972A GB1363026A GB 1363026 A GB1363026 A GB 1363026A GB 3948972 A GB3948972 A GB 3948972A GB 3948972 A GB3948972 A GB 3948972A GB 1363026 A GB1363026 A GB 1363026A
Authority
GB
United Kingdom
Prior art keywords
frame
window
overhead projector
divice
support
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
GB3948972A
Other languages
English (en)
Inventor
G Ritzerfeld
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 GB1363026A publication Critical patent/GB1363026A/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)
  • Overhead Projectors And Projection Screens (AREA)
  • Drawing Aids And Blackboards (AREA)
GB3948972A 1971-10-22 1972-08-24 Support divice for overhead projector Expired GB1363026A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19717140691 DE7140691U (de) 1971-10-22 1971-10-22 Arbeitsplatte bzw. schreibplatte fuer einen schreibprojektor

Publications (1)

Publication Number Publication Date
GB1363026A true GB1363026A (en) 1974-08-14

Family

ID=6624769

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3948972A Expired GB1363026A (en) 1971-10-22 1972-08-24 Support divice for overhead projector

Country Status (7)

Country Link
BE (1) BE788185A (enExample)
CH (1) CH541819A (enExample)
DE (1) DE7140691U (enExample)
FR (1) FR2157559A5 (enExample)
GB (1) GB1363026A (enExample)
NL (1) NL7212063A (enExample)
SE (1) SE374437B (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879731U (ja) * 1981-11-26 1983-05-30 ソニー株式会社 リアプロジエクタ装置

Also Published As

Publication number Publication date
BE788185A (fr) 1972-12-18
NL7212063A (enExample) 1973-04-25
DE7140691U (de) 1972-01-27
FR2157559A5 (enExample) 1973-06-01
SE374437B (enExample) 1975-03-03
CH541819A (de) 1973-09-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees