CA895784A - Concealed image process and materials - Google Patents

Concealed image process and materials

Info

Publication number
CA895784A
CA895784A CA895784A CA895784DA CA895784A CA 895784 A CA895784 A CA 895784A CA 895784 A CA895784 A CA 895784A CA 895784D A CA895784D A CA 895784DA CA 895784 A CA895784 A CA 895784A
Authority
CA
Canada
Prior art keywords
materials
image process
concealed image
concealed
image
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
CA895784A
Inventor
E. Thomas 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.)
AB Dick Co
Original Assignee
AB Dick Co
Publication date
Application granted granted Critical
Publication of CA895784A publication Critical patent/CA895784A/en
Expired legal-status Critical Current

Links

CA895784A Concealed image process and materials Expired CA895784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA895784T

Publications (1)

Publication Number Publication Date
CA895784A true CA895784A (en) 1972-03-21

Family

ID=36401761

Family Applications (1)

Application Number Title Priority Date Filing Date
CA895784A Expired CA895784A (en) Concealed image process and materials

Country Status (1)

Country Link
CA (1) CA895784A (en)

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