CA484620A - Manufacture of moulds for optical screens and reflecting signs - Google Patents

Manufacture of moulds for optical screens and reflecting signs

Info

Publication number
CA484620A
CA484620A CA484620A CA484620DA CA484620A CA 484620 A CA484620 A CA 484620A CA 484620 A CA484620 A CA 484620A CA 484620D A CA484620D A CA 484620DA CA 484620 A CA484620 A CA 484620A
Authority
CA
Canada
Prior art keywords
moulds
manufacture
optical screens
reflecting signs
signs
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
CA484620A
Other languages
French (fr)
Inventor
Waterman Luce Richard
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 CA484620A publication Critical patent/CA484620A/en
Expired legal-status Critical Current

Links

CA484620A Manufacture of moulds for optical screens and reflecting signs Expired CA484620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA484620T

Publications (1)

Publication Number Publication Date
CA484620A true CA484620A (en) 1952-07-08

Family

ID=35624337

Family Applications (1)

Application Number Title Priority Date Filing Date
CA484620A Expired CA484620A (en) Manufacture of moulds for optical screens and reflecting signs

Country Status (1)

Country Link
CA (1) CA484620A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189670A (en) * 1962-09-10 1965-06-15 Fma Inc Method for producing a mold for use in the fabrication of backlit projection screens
US3538198A (en) * 1967-12-04 1970-11-03 Roger Lannes De Montebello Production of lenticular sheets for integral photography

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189670A (en) * 1962-09-10 1965-06-15 Fma Inc Method for producing a mold for use in the fabrication of backlit projection screens
US3538198A (en) * 1967-12-04 1970-11-03 Roger Lannes De Montebello Production of lenticular sheets for integral photography

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