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FR770750A - Perfectionnements aux tirages au ferro-prussiate - Google Patents

Perfectionnements aux tirages au ferro-prussiate

Info

Publication number
FR770750A
FR770750A FR770750DA FR770750A FR 770750 A FR770750 A FR 770750A FR 770750D A FR770750D A FR 770750DA FR 770750 A FR770750 A FR 770750A
Authority
FR
France
Prior art keywords
prussiate
ferro
prints
prussiate prints
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)
Inventor
Humphrey Desmond Murray
Douglas Arthur Spencer
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.)
Norton & Gregory Ltd
Original Assignee
Norton & Gregory Ltd
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 Norton & Gregory Ltd filed Critical Norton & Gregory Ltd
Application granted granted Critical
Publication of FR770750A publication Critical patent/FR770750A/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
    • G03C1/64—Compositions containing iron compounds as photosensitive substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Color Printing (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
FR770750D 1933-03-10 1934-03-09 Perfectionnements aux tirages au ferro-prussiate Expired FR770750A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7317/33A GB416489A (en) 1933-03-10 1933-03-10 Improvements in the development of blue prints

Publications (1)

Publication Number Publication Date
FR770750A true FR770750A (fr) 1934-09-20

Family

ID=9830821

Family Applications (1)

Application Number Title Priority Date Filing Date
FR770750D Expired FR770750A (fr) 1933-03-10 1934-03-09 Perfectionnements aux tirages au ferro-prussiate

Country Status (4)

Country Link
US (1) US2014692A (fr)
FR (1) FR770750A (fr)
GB (1) GB416489A (fr)
NL (1) NL40427C (fr)

Also Published As

Publication number Publication date
GB416489A (en) 1934-09-10
NL40427C (fr)
US2014692A (en) 1935-09-17

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