CA431886A - Ecran a projection d'images - Google Patents

Ecran a projection d'images

Info

Publication number
CA431886A
CA431886A CA431886A CA431886DA CA431886A CA 431886 A CA431886 A CA 431886A CA 431886 A CA431886 A CA 431886A CA 431886D A CA431886D A CA 431886DA CA 431886 A CA431886 A CA 431886A
Authority
CA
Canada
Prior art keywords
projection screen
picture projection
picture
screen
projection
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
CA431886A
Other languages
English (en)
Inventor
E. Smith Harry
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 CA431886A publication Critical patent/CA431886A/fr
Expired legal-status Critical Current

Links

CA431886A Ecran a projection d'images Expired CA431886A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA431886T

Publications (1)

Publication Number Publication Date
CA431886A true CA431886A (fr) 1945-12-11

Family

ID=35546934

Family Applications (1)

Application Number Title Priority Date Filing Date
CA431886A Expired CA431886A (fr) Ecran a projection d'images

Country Status (1)

Country Link
CA (1) CA431886A (fr)

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