CA798616A - Symmetrical projection lens - Google Patents

Symmetrical projection lens

Info

Publication number
CA798616A
CA798616A CA798616A CA798616DA CA798616A CA 798616 A CA798616 A CA 798616A CA 798616 A CA798616 A CA 798616A CA 798616D A CA798616D A CA 798616DA CA 798616 A CA798616 A CA 798616A
Authority
CA
Canada
Prior art keywords
projection lens
symmetrical projection
symmetrical
lens
projection
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
CA798616A
Inventor
L. Ruben Paul
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA798616A publication Critical patent/CA798616A/en
Expired legal-status Critical Current

Links

CA798616A Symmetrical projection lens Expired CA798616A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA798616T

Publications (1)

Publication Number Publication Date
CA798616A true CA798616A (en) 1968-11-12

Family

ID=36266625

Family Applications (1)

Application Number Title Priority Date Filing Date
CA798616A Expired CA798616A (en) Symmetrical projection lens

Country Status (1)

Country Link
CA (1) CA798616A (en)

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