CA485839A - Process of and apparatus for making half-tone negatives - Google Patents

Process of and apparatus for making half-tone negatives

Info

Publication number
CA485839A
CA485839A CA485839A CA485839DA CA485839A CA 485839 A CA485839 A CA 485839A CA 485839 A CA485839 A CA 485839A CA 485839D A CA485839D A CA 485839DA CA 485839 A CA485839 A CA 485839A
Authority
CA
Canada
Prior art keywords
making half
tone negatives
negatives
tone
making
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
CA485839A
Other languages
French (fr)
Inventor
Ernest Wattier Francis
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 CA485839A publication Critical patent/CA485839A/en
Expired legal-status Critical Current

Links

CA485839A Process of and apparatus for making half-tone negatives Expired CA485839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA485839T

Publications (1)

Publication Number Publication Date
CA485839A true CA485839A (en) 1952-08-19

Family

ID=35625555

Family Applications (1)

Application Number Title Priority Date Filing Date
CA485839A Expired CA485839A (en) Process of and apparatus for making half-tone negatives

Country Status (1)

Country Link
CA (1) CA485839A (en)

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