CA340961A - Photographic contrast production - Google Patents

Photographic contrast production

Info

Publication number
CA340961A
CA340961A CA340961A CA340961DA CA340961A CA 340961 A CA340961 A CA 340961A CA 340961 A CA340961 A CA 340961A CA 340961D A CA340961D A CA 340961DA CA 340961 A CA340961 A CA 340961A
Authority
CA
Canada
Prior art keywords
contrast production
photographic contrast
photographic
production
contrast
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
CA340961A
Other languages
French (fr)
Inventor
Jan Hendrik Alink Roelof
Hendrik De Boer Jan
Johannes Dippel Cornelis
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Publication date
Application granted granted Critical
Publication of CA340961A publication Critical patent/CA340961A/en
Expired legal-status Critical Current

Links

CA340961A Photographic contrast production Expired CA340961A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA340961T

Publications (1)

Publication Number Publication Date
CA340961A true CA340961A (en) 1934-04-17

Family

ID=35312235

Family Applications (1)

Application Number Title Priority Date Filing Date
CA340961A Expired CA340961A (en) Photographic contrast production

Country Status (1)

Country Link
CA (1) CA340961A (en)

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