CA545300A - Ecrans de projection - Google Patents

Ecrans de projection

Info

Publication number
CA545300A
CA545300A CA545300A CA545300DA CA545300A CA 545300 A CA545300 A CA 545300A CA 545300 A CA545300 A CA 545300A CA 545300D A CA545300D A CA 545300DA CA 545300 A CA545300 A CA 545300A
Authority
CA
Canada
Prior art keywords
projection screens
screens
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
CA545300A
Other languages
English (en)
Inventor
G. Jackson James
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 CA545300A publication Critical patent/CA545300A/fr
Expired legal-status Critical Current

Links

CA545300A Ecrans de projection Expired CA545300A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA545300T

Publications (1)

Publication Number Publication Date
CA545300A true CA545300A (fr) 1957-08-27

Family

ID=35702478

Family Applications (1)

Application Number Title Priority Date Filing Date
CA545300A Expired CA545300A (fr) Ecrans de projection

Country Status (1)

Country Link
CA (1) CA545300A (fr)

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