CA423584A - Ecran de projection - Google Patents

Ecran de projection

Info

Publication number
CA423584A
CA423584A CA423584A CA423584DA CA423584A CA 423584 A CA423584 A CA 423584A CA 423584 A CA423584 A CA 423584A CA 423584D A CA423584D A CA 423584DA CA 423584 A CA423584 A CA 423584A
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
CA423584A
Other languages
English (en)
Inventor
Schweizer Ernest
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
Publication date
Application granted granted Critical
Publication of CA423584A publication Critical patent/CA423584A/fr
Expired legal-status Critical Current

Links

CA423584A Ecran de projection Expired CA423584A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA423584T

Publications (1)

Publication Number Publication Date
CA423584A true CA423584A (fr) 1944-10-31

Family

ID=35534590

Family Applications (1)

Application Number Title Priority Date Filing Date
CA423584A Expired CA423584A (fr) Ecran de projection

Country Status (1)

Country Link
CA (1) CA423584A (fr)

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