FR2298122A1 - Dispositif d'ecran de projection destine a etre enroule et deroule - Google Patents

Dispositif d'ecran de projection destine a etre enroule et deroule

Info

Publication number
FR2298122A1
FR2298122A1 FR7524611A FR7524611A FR2298122A1 FR 2298122 A1 FR2298122 A1 FR 2298122A1 FR 7524611 A FR7524611 A FR 7524611A FR 7524611 A FR7524611 A FR 7524611A FR 2298122 A1 FR2298122 A1 FR 2298122A1
Authority
FR
France
Prior art keywords
unwinded
wound
projection screen
screen device
device intended
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.)
Granted
Application number
FR7524611A
Other languages
English (en)
French (fr)
Other versions
FR2298122B1 (lv
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.)
NECKERMANN VERSAND KGAA
Original Assignee
NECKERMANN VERSAND KGAA
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 NECKERMANN VERSAND KGAA filed Critical NECKERMANN VERSAND KGAA
Publication of FR2298122A1 publication Critical patent/FR2298122A1/fr
Application granted granted Critical
Publication of FR2298122B1 publication Critical patent/FR2298122B1/fr
Granted 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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
FR7524611A 1975-01-17 1975-08-07 Dispositif d'ecran de projection destine a etre enroule et deroule Granted FR2298122A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7501295 1975-01-17

Publications (2)

Publication Number Publication Date
FR2298122A1 true FR2298122A1 (fr) 1976-08-13
FR2298122B1 FR2298122B1 (lv) 1979-05-11

Family

ID=6649712

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7524611A Granted FR2298122A1 (fr) 1975-01-17 1975-08-07 Dispositif d'ecran de projection destine a etre enroule et deroule

Country Status (10)

Country Link
AT (1) AT335537B (lv)
BE (1) BE832380A (lv)
CH (1) CH595649A5 (lv)
DD (1) DD121196A5 (lv)
DK (1) DK350075A (lv)
FR (1) FR2298122A1 (lv)
GB (1) GB1467569A (lv)
LU (1) LU73134A1 (lv)
NL (1) NL7600054A (lv)
SE (1) SE7508721L (lv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383461A1 (fr) * 1977-03-09 1978-10-06 Mechanische Weberei Gmbh Ecran de projection avec haut-parleurs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383461A1 (fr) * 1977-03-09 1978-10-06 Mechanische Weberei Gmbh Ecran de projection avec haut-parleurs

Also Published As

Publication number Publication date
DK350075A (da) 1976-07-18
NL7600054A (nl) 1976-07-20
FR2298122B1 (lv) 1979-05-11
DD121196A5 (lv) 1976-07-12
GB1467569A (en) 1977-03-16
ATA579975A (de) 1976-07-15
BE832380A (fr) 1975-12-01
SE7508721L (sv) 1976-07-19
AT335537B (de) 1977-03-10
LU73134A1 (lv) 1976-03-02
CH595649A5 (lv) 1978-02-15

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Legal Events

Date Code Title Description
ST Notification of lapse