CA403143A - Ecran a projection d'images - Google Patents

Ecran a projection d'images

Info

Publication number
CA403143A
CA403143A CA403143A CA403143DA CA403143A CA 403143 A CA403143 A CA 403143A CA 403143 A CA403143 A CA 403143A CA 403143D A CA403143D A CA 403143DA CA 403143 A CA403143 A CA 403143A
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
CA403143A
Other languages
English (en)
Inventor
M. Kennedy Dewey
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 CA403143A publication Critical patent/CA403143A/fr
Expired legal-status Critical Current

Links

CA403143A Ecran a projection d'images Expired CA403143A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA403143T

Publications (1)

Publication Number Publication Date
CA403143A true CA403143A (fr) 1942-03-03

Family

ID=35413590

Family Applications (1)

Application Number Title Priority Date Filing Date
CA403143A Expired CA403143A (fr) Ecran a projection d'images

Country Status (1)

Country Link
CA (1) CA403143A (fr)

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