GB1424298A - Overhead projector - Google Patents

Overhead projector

Info

Publication number
GB1424298A
GB1424298A GB2125974A GB2125974A GB1424298A GB 1424298 A GB1424298 A GB 1424298A GB 2125974 A GB2125974 A GB 2125974A GB 2125974 A GB2125974 A GB 2125974A GB 1424298 A GB1424298 A GB 1424298A
Authority
GB
United Kingdom
Prior art keywords
overhead projector
lamp
housing
head
lamp housing
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
GB2125974A
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 GB1424298A publication Critical patent/GB1424298A/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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB2125974A 1973-06-23 1974-05-14 Overhead projector Expired GB1424298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2332662A DE2332662A1 (de) 1973-06-23 1973-06-23 Tageslicht-projektionsgeraet

Publications (1)

Publication Number Publication Date
GB1424298A true GB1424298A (en) 1976-02-11

Family

ID=5885227

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2125974A Expired GB1424298A (en) 1973-06-23 1974-05-14 Overhead projector

Country Status (7)

Country Link
BE (1) BE814263A (enrdf_load_stackoverflow)
CH (1) CH561434A5 (enrdf_load_stackoverflow)
DE (1) DE2332662A1 (enrdf_load_stackoverflow)
DK (1) DK333574A (enrdf_load_stackoverflow)
FR (1) FR2234827A5 (enrdf_load_stackoverflow)
GB (1) GB1424298A (enrdf_load_stackoverflow)
NO (1) NO741870L (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9311880U1 (de) * 1993-08-04 1993-10-14 AV-Kommunikation Anders + Kern GmbH & Co KG, 22851 Norderstedt Overhead-Projektor mit einem Variofocalobjektiv
DE19538795C2 (de) * 1995-10-18 1997-11-27 Peter Ochsenmeier Durchlicht-Overheadprojektor

Also Published As

Publication number Publication date
BE814263A (fr) 1974-08-16
FR2234827A5 (enrdf_load_stackoverflow) 1975-01-17
DK333574A (enrdf_load_stackoverflow) 1975-02-10
DE2332662A1 (de) 1975-03-20
NO741870L (enrdf_load_stackoverflow) 1975-01-20
CH561434A5 (enrdf_load_stackoverflow) 1975-04-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee