DK47759C - Method and Apparatus for Producing a Photographic Contrast Effect Using Invisible Beams. - Google Patents

Method and Apparatus for Producing a Photographic Contrast Effect Using Invisible Beams.

Info

Publication number
DK47759C
DK47759C DK47759DA DK47759C DK 47759 C DK47759 C DK 47759C DK 47759D A DK47759D A DK 47759DA DK 47759 C DK47759 C DK 47759C
Authority
DK
Denmark
Prior art keywords
producing
contrast effect
photographic contrast
invisible beams
invisible
Prior art date
Application number
Other languages
Danish (da)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of DK47759C publication Critical patent/DK47759C/en

Links

DK47759D 1930-08-30 1931-07-31 Method and Apparatus for Producing a Photographic Contrast Effect Using Invisible Beams. DK47759C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL47759X 1930-08-30

Publications (1)

Publication Number Publication Date
DK47759C true DK47759C (en) 1933-09-11

Family

ID=19756044

Family Applications (1)

Application Number Title Priority Date Filing Date
DK47759D DK47759C (en) 1930-08-30 1931-07-31 Method and Apparatus for Producing a Photographic Contrast Effect Using Invisible Beams.

Country Status (1)

Country Link
DK (1) DK47759C (en)

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