FR2141508B1 - - Google Patents

Info

Publication number
FR2141508B1
FR2141508B1 FR7120994A FR7120994A FR2141508B1 FR 2141508 B1 FR2141508 B1 FR 2141508B1 FR 7120994 A FR7120994 A FR 7120994A FR 7120994 A FR7120994 A FR 7120994A FR 2141508 B1 FR2141508 B1 FR 2141508B1
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
FR7120994A
Other languages
French (fr)
Other versions
FR2141508A1 (OSRAM
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
Priority to FR7120994A priority Critical patent/FR2141508B1/fr
Publication of FR2141508A1 publication Critical patent/FR2141508A1/fr
Application granted granted Critical
Publication of FR2141508B1 publication Critical patent/FR2141508B1/fr
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)
FR7120994A 1971-06-01 1971-06-01 Expired FR2141508B1 (OSRAM)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7120994A FR2141508B1 (OSRAM) 1971-06-01 1971-06-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7120994A FR2141508B1 (OSRAM) 1971-06-01 1971-06-01

Publications (2)

Publication Number Publication Date
FR2141508A1 FR2141508A1 (OSRAM) 1973-01-26
FR2141508B1 true FR2141508B1 (OSRAM) 1973-06-29

Family

ID=9078385

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7120994A Expired FR2141508B1 (OSRAM) 1971-06-01 1971-06-01

Country Status (1)

Country Link
FR (1) FR2141508B1 (OSRAM)

Also Published As

Publication number Publication date
FR2141508A1 (OSRAM) 1973-01-26

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Legal Events

Date Code Title Description
ST Notification of lapse