CA380460A - Ecran a projections - Google Patents

Ecran a projections

Info

Publication number
CA380460A
CA380460A CA380460A CA380460DA CA380460A CA 380460 A CA380460 A CA 380460A CA 380460 A CA380460 A CA 380460A CA 380460D A CA380460D A CA 380460DA CA 380460 A CA380460 A CA 380460A
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
CA380460A
Other languages
English (en)
Inventor
Leslie Stableford 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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA380460A publication Critical patent/CA380460A/fr
Expired legal-status Critical Current

Links

CA380460A Ecran a projections Expired CA380460A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA380460T

Publications (1)

Publication Number Publication Date
CA380460A true CA380460A (fr) 1939-03-28

Family

ID=35384785

Family Applications (1)

Application Number Title Priority Date Filing Date
CA380460A Expired CA380460A (fr) Ecran a projections

Country Status (1)

Country Link
CA (1) CA380460A (fr)

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