FR2083230A5 - - Google Patents

Info

Publication number: FR2083230A5
Authority: FR; France
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

FR7110110A

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.)

1970-04-09

Filing date

1971-03-23

Publication date

1971-12-10

1971-03-23 Application filed by Individual filed Critical Individual

1971-12-10 Application granted granted Critical

1971-12-10 Publication of FR2083230A5 publication Critical patent/FR2083230A5/fr

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)

FR7110110A 1970-04-09 1971-03-23 Expired FR2083230A5 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19707013655 DE7013655U (de)	1970-04-09	1970-04-09	Schreibprojektor.

Publications (1)

Publication Number	Publication Date
FR2083230A5 true FR2083230A5 (fr)	1971-12-10

Family

ID=6610883

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR7110110A Expired FR2083230A5 (fr)	1970-04-09	1971-03-23

Country Status (3)

Country	Link
CH (1)	CH514151A (fr)
DE (1)	DE7013655U (fr)
FR (1)	FR2083230A5 (fr)

1970
- 1970-04-09 DE DE19707013655 patent/DE7013655U/de not_active Expired
1971
- 1971-02-19 CH CH246871A patent/CH514151A/de unknown
- 1971-03-23 FR FR7110110A patent/FR2083230A5/fr not_active Expired

Also Published As

Publication number	Publication date
DE7013655U (de)	1970-08-27
CH514151A (de)	1971-10-15

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Legal Events

Date	Code	Title	Description
1985-01-25	ST	Notification of lapse