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FR837820A - Papier photographique de sûreté - Google Patents

Papier photographique de sûreté

Info

Publication number
FR837820A
FR837820A FR837820DA FR837820A FR 837820 A FR837820 A FR 837820A FR 837820D A FR837820D A FR 837820DA FR 837820 A FR837820 A FR 837820A
Authority
FR
France
Prior art keywords
security
photographic paper
photographic
paper
security photographic
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
Other languages
English (en)
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of FR837820A publication Critical patent/FR837820A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/40—Dyestuffs not covered by the groups G03C1/08 - G03C1/38 or G03C1/42

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
FR837820D 1937-05-15 1938-05-11 Papier photographique de sûreté Expired FR837820A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE837820X 1937-05-15

Publications (1)

Publication Number Publication Date
FR837820A true FR837820A (fr) 1939-02-21

Family

ID=6761519

Family Applications (1)

Application Number Title Priority Date Filing Date
FR837820D Expired FR837820A (fr) 1937-05-15 1938-05-11 Papier photographique de sûreté

Country Status (1)

Country Link
FR (1) FR837820A (fr)

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