GB2060193B - Extension platform for holding transparencies on an overhead projector - Google Patents

Extension platform for holding transparencies on an overhead projector

Info

Publication number
GB2060193B
GB2060193B GB8026841A GB8026841A GB2060193B GB 2060193 B GB2060193 B GB 2060193B GB 8026841 A GB8026841 A GB 8026841A GB 8026841 A GB8026841 A GB 8026841A GB 2060193 B GB2060193 B GB 2060193B
Authority
GB
United Kingdom
Prior art keywords
overhead projector
extension platform
transparencies
holding
holding transparencies
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
GB8026841A
Other languages
English (en)
Other versions
GB2060193A (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 GB2060193A publication Critical patent/GB2060193A/en
Application granted granted Critical
Publication of GB2060193B publication Critical patent/GB2060193B/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)
  • Projection Apparatus (AREA)
  • Coin-Freed Apparatuses For Hiring Articles (AREA)
GB8026841A 1979-09-11 1980-08-18 Extension platform for holding transparencies on an overhead projector Expired GB2060193B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7449079A 1979-09-11 1979-09-11

Publications (2)

Publication Number Publication Date
GB2060193A GB2060193A (en) 1981-04-29
GB2060193B true GB2060193B (en) 1983-08-24

Family

ID=22119833

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8026841A Expired GB2060193B (en) 1979-09-11 1980-08-18 Extension platform for holding transparencies on an overhead projector

Country Status (8)

Country Link
CA (1) CA1125066A (OSRAM)
CH (1) CH647340A5 (OSRAM)
DE (1) DE3025927A1 (OSRAM)
DK (1) DK379080A (OSRAM)
FR (1) FR2465247A1 (OSRAM)
GB (1) GB2060193B (OSRAM)
NL (1) NL8005104A (OSRAM)
SE (1) SE445394B (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD307030S (en) 1987-04-10 1990-04-03 Buhl Industries Light box assembly for an overhead projector
USD373779S (en) 1994-10-31 1996-09-17 Plus Corporation Combined overhead projector and automatic film feeding unit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE439999B (sv) * 1984-07-23 1985-07-08 Nord Ab Ingfirma Forfarande for presentation av information pa ett flertal arkformiga informationsberare samt anordning for genomforande av forfarandet
DE4241860A1 (de) * 1992-12-11 1994-06-16 Geha Werke Gmbh Wechseleinrichtung für die Projektion von Overhead-Folien und Klarsicht-Folientasche
WO1994024605A1 (en) * 1993-04-16 1994-10-27 Nichod Inc. Transparency organizer and storage tray

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3253358A (en) * 1963-07-17 1966-05-31 John S Wright Visual teaching system
US3640613A (en) * 1967-03-24 1972-02-08 Scott Paper Co Transparency display apparatus
US3524703A (en) * 1968-07-29 1970-08-18 John S Wright Transparency storage and display device for an overhead projector
NL6918742A (OSRAM) * 1969-12-13 1971-06-15
US3709590A (en) * 1970-09-14 1973-01-09 A Bisberg Folder for overhead projector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD307030S (en) 1987-04-10 1990-04-03 Buhl Industries Light box assembly for an overhead projector
USD373779S (en) 1994-10-31 1996-09-17 Plus Corporation Combined overhead projector and automatic film feeding unit

Also Published As

Publication number Publication date
NL8005104A (nl) 1981-03-13
GB2060193A (en) 1981-04-29
CH647340A5 (de) 1985-01-15
DE3025927A1 (de) 1981-03-26
SE8005825L (sv) 1981-03-12
FR2465247A1 (fr) 1981-03-20
CA1125066A (en) 1982-06-08
DK379080A (da) 1981-03-12
SE445394B (sv) 1986-06-16
FR2465247B1 (OSRAM) 1983-12-16

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Legal Events

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

Effective date: 19920818