CA466093A - Ecran de projection - Google Patents

Ecran de projection

Info

Publication number
CA466093A
CA466093A CA466093A CA466093DA CA466093A CA 466093 A CA466093 A CA 466093A CA 466093 A CA466093 A CA 466093A CA 466093D A CA466093D A CA 466093DA CA 466093 A CA466093 A CA 466093A
Authority
CA
Canada
Prior art keywords
light screen
screen
light
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
CA466093A
Other languages
English (en)
Inventor
R. Miller Frederick
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 CA466093A publication Critical patent/CA466093A/fr
Expired legal-status Critical Current

Links

CA466093A Ecran de projection Expired CA466093A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA466093T

Publications (1)

Publication Number Publication Date
CA466093A true CA466093A (fr) 1950-06-27

Family

ID=35595848

Family Applications (1)

Application Number Title Priority Date Filing Date
CA466093A Expired CA466093A (fr) Ecran de projection

Country Status (1)

Country Link
CA (1) CA466093A (fr)

Similar Documents

Publication Publication Date Title
CA466093A (fr) Ecran de projection
CA468044A (fr) Acylaceto guanazoles
CA469403A (fr) Ecrans de projection
CA466325A (fr) Ecran pour rayons de chaleur
CA464658A (fr) Appareil photographique
CA467662A (fr) Projecteurs
CA462434A (fr) Trepied
CA467595A (fr) Petoires
CA466717A (fr) Lentille
CA465823A (fr) Lentille
AU149649B2 (en) Improved fluorescent light frame
CA464689A (fr) Ecran luminescent
CA462703A (fr) Dispositif de separation de lumiere
CA469612A (fr) Abat-jour
AU147451B2 (en) Traffic light
CA468545A (fr) Appareils d'eclairage
CA473361A (fr) Commandes de lumieres
AU3281450A (en) Improved fluorescent light frame
CA469328A (fr) Appareil photographique
CA465699A (fr) Appareil a pellicules
CA464659A (fr) Appareil photographique
CA469573A (fr) Ecrans de projection arriere
CA464473A (fr) Lampe de phare
AU151463B2 (en) An improved lamp
CA462394A (fr) Element d'optique