GB2134279B - An overhead projector - Google Patents

An overhead projector

Info

Publication number: GB2134279B
Authority: GB; United Kingdom
Prior art keywords: overhead projector; projector; overhead
Prior art date: 1983-01-21
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

GB08401196A

Other versions

GB2134279A (en

GB8401196D0 (en

Inventor

Jesper Munk Laursen

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.)

Memofax AS

Original Assignee

Memofax AS

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.)

1983-01-21

Filing date

1984-01-17

Publication date

1986-07-09

1984-01-17 Application filed by Memofax AS filed Critical Memofax AS

1984-02-22 Publication of GB8401196D0 publication Critical patent/GB8401196D0/en

1984-08-08 Publication of GB2134279A publication Critical patent/GB2134279A/en

1986-07-09 Application granted granted Critical

1986-07-09 Publication of GB2134279B publication Critical patent/GB2134279B/en

Status Expired legal-status Critical Current

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)
Projection Apparatus (AREA)
Overhead Projectors And Projection Screens (AREA)

GB08401196A 1983-01-21 1984-01-17 An overhead projector Expired GB2134279B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DK24283A DK24283A (en)	1983-01-21	1983-01-21	OVERHEAD PROJECTOR

Publications (3)

Publication Number	Publication Date
GB8401196D0 GB8401196D0 (en)	1984-02-22
GB2134279A GB2134279A (en)	1984-08-08
GB2134279B true GB2134279B (en)	1986-07-09

Family

ID=8091339

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB08401196A Expired GB2134279B (en)	1983-01-21	1984-01-17	An overhead projector

Country Status (4)

Country	Link
DE (1)	DE3401709A1 (en)
DK (1)	DK24283A (en)
FR (1)	FR2539886B1 (en)
GB (1)	GB2134279B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4728184A (en) *	1987-05-26	1988-03-01	Buhl Industries, Inc.	Foldable transparency enlarger for overhead projector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3482911A (en) *	1967-03-20	1969-12-09	William A Noble	Image projection apparatus
DE1961215B2 (en) *	1969-12-05	1972-03-16	Kindermann & Co GmbH, 8703 Ochsen fürt	WRITING PROJECTOR WITH A DEVICE FOR PROJECTING SLIDES AND FILM STRIPS
DE7018612U (en) *	1970-05-20	1970-12-10	Klaus W Reiser & Co	PROJECTION DEVICE.
DE7231583U (en) *	1972-08-23	1973-01-04	Ritzerfeld G	WRITING PROJECTOR

1983
- 1983-01-21 DK DK24283A patent/DK24283A/en not_active Application Discontinuation
1984
- 1984-01-17 GB GB08401196A patent/GB2134279B/en not_active Expired
- 1984-01-19 DE DE19843401709 patent/DE3401709A1/en not_active Withdrawn
- 1984-01-20 FR FR8400885A patent/FR2539886B1/en not_active Expired

Also Published As

Publication number	Publication date
DE3401709A1 (en)	1984-07-26
DK24283A (en)	1984-07-22
FR2539886A1 (en)	1984-07-27
GB2134279A (en)	1984-08-08
FR2539886B1 (en)	1988-09-23
GB8401196D0 (en)	1984-02-22
DK24283D0 (en)	1983-01-21

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Legal Events

Date	Code	Title	Description
1989-09-13	PCNP	Patent ceased through non-payment of renewal fee