CA473787A - Portable projection screens - Google Patents

Portable projection screens

Info

Publication number
CA473787A
CA473787A CA473787A CA473787DA CA473787A CA 473787 A CA473787 A CA 473787A CA 473787 A CA473787 A CA 473787A CA 473787D A CA473787D A CA 473787DA CA 473787 A CA473787 A CA 473787A
Authority
CA
Canada
Prior art keywords
projection screens
portable projection
portable
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
CA473787A
Other languages
French (fr)
Inventor
J. Du Mais Leo
T. Heck John
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.)
DA LITE SCREEN CO Inc
Original Assignee
DA-LITE SCREEN Co
Publication date
Application granted granted Critical
Publication of CA473787A publication Critical patent/CA473787A/en
Expired legal-status Critical Current

Links

CA473787A Portable projection screens Expired CA473787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA473787T

Publications (1)

Publication Number Publication Date
CA473787A true CA473787A (en) 1951-05-22

Family

ID=35607758

Family Applications (1)

Application Number Title Priority Date Filing Date
CA473787A Expired CA473787A (en) Portable projection screens

Country Status (1)

Country Link
CA (1) CA473787A (en)

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