AU445314B2 - Variable light-filtering device - Google Patents

Variable light-filtering device

Info

Publication number
AU445314B2
AU445314B2 AU19158/70A AU1915870A AU445314B2 AU 445314 B2 AU445314 B2 AU 445314B2 AU 19158/70 A AU19158/70 A AU 19158/70A AU 1915870 A AU1915870 A AU 1915870A AU 445314 B2 AU445314 B2 AU 445314B2
Authority
AU
Australia
Prior art keywords
filtering device
variable light
variable
light
filtering
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
AU19158/70A
Other versions
AU1915870A (en
Inventor
Gardner Rogers Howard
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.)
Polaroid Corp
Original Assignee
Polaroid Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Polaroid Corp filed Critical Polaroid Corp
Application granted granted Critical
Publication of AU1915870A publication Critical patent/AU1915870A/en
Publication of AU445314B2 publication Critical patent/AU445314B2/en
Expired legal-status Critical Current

Links

AU19158/70A 1969-09-02 1970-08-25 Variable light-filtering device Expired AU445314B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
USUS854,522 1969-09-02

Publications (2)

Publication Number Publication Date
AU1915870A AU1915870A (en) 1972-03-02
AU445314B2 true AU445314B2 (en) 1972-03-02

Family

ID=

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