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CA761705A - Lighthouse intensity exposure control lens - Google Patents

Lighthouse intensity exposure control lens

Info

Publication number
CA761705A
CA761705A CA761705A CA761705DA CA761705A CA 761705 A CA761705 A CA 761705A CA 761705 A CA761705 A CA 761705A CA 761705D A CA761705D A CA 761705DA CA 761705 A CA761705 A CA 761705A
Authority
CA
Canada
Prior art keywords
lighthouse
exposure control
control lens
intensity exposure
intensity
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
CA761705A
Inventor
H. Kaplan Sam
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.)
Rauland Borg Corp
Original Assignee
Rauland Borg Corp
Publication date
Application granted granted Critical
Publication of CA761705A publication Critical patent/CA761705A/en
Expired legal-status Critical Current

Links

CA761705A Lighthouse intensity exposure control lens Expired CA761705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA761705T

Publications (1)

Publication Number Publication Date
CA761705A true CA761705A (en) 1967-06-27

Family

ID=36198824

Family Applications (1)

Application Number Title Priority Date Filing Date
CA761705A Expired CA761705A (en) Lighthouse intensity exposure control lens

Country Status (1)

Country Link
CA (1) CA761705A (en)

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