CA504452A - Ecran de projection - Google Patents

Ecran de projection

Info

Publication number
CA504452A
CA504452A CA504452A CA504452DA CA504452A CA 504452 A CA504452 A CA 504452A CA 504452 A CA504452 A CA 504452A CA 504452D A CA504452D A CA 504452DA CA 504452 A CA504452 A CA 504452A
Authority
CA
Canada
Prior art keywords
projection screen
projection
screen
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
CA504452A
Other languages
English (en)
Inventor
Berkley Carl
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.)
Du Mont Television and Electronics Ltd
Original Assignee
Du Mont Television and Electronics Ltd
Publication date
Application granted granted Critical
Publication of CA504452A publication Critical patent/CA504452A/fr
Expired legal-status Critical Current

Links

CA504452A Ecran de projection Expired CA504452A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA504452T

Publications (1)

Publication Number Publication Date
CA504452A true CA504452A (fr) 1954-07-20

Family

ID=35650373

Family Applications (1)

Application Number Title Priority Date Filing Date
CA504452A Expired CA504452A (fr) Ecran de projection

Country Status (1)

Country Link
CA (1) CA504452A (fr)

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