FR989448A - Encre sympathique - Google Patents

Encre sympathique

Info

Publication number
FR989448A
FR989448A FR989448DA FR989448A FR 989448 A FR989448 A FR 989448A FR 989448D A FR989448D A FR 989448DA FR 989448 A FR989448 A FR 989448A
Authority
FR
France
Prior art keywords
sympathetic ink
sympathetic
ink
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
Antonio Centazzo
Duino Gerotto
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 filed Critical
Application granted granted Critical
Publication of FR989448A publication Critical patent/FR989448A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B3/00—Manually or mechanically operated teaching appliances working with questions and answers
    • G09B3/02—Manually or mechanically operated teaching appliances working with questions and answers of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by a student
    • G09B3/04—Manually or mechanically operated teaching appliances working with questions and answers of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by a student of chart form
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/50—Sympathetic, colour changing or similar inks

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
FR989448D 1939-01-26 1949-06-22 Encre sympathique Expired FR989448A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT989448X 1939-01-26

Publications (1)

Publication Number Publication Date
FR989448A true FR989448A (fr) 1951-09-10

Family

ID=11333054

Family Applications (1)

Application Number Title Priority Date Filing Date
FR989448D Expired FR989448A (fr) 1939-01-26 1949-06-22 Encre sympathique

Country Status (1)

Country Link
FR (1) FR989448A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014216A4 (fr) * 1978-04-03 1980-03-07 Adger Kogyo Co Ltd Composition d'encre.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014216A4 (fr) * 1978-04-03 1980-03-07 Adger Kogyo Co Ltd Composition d'encre.
EP0014216A1 (fr) * 1978-04-03 1980-08-20 Adger Kogyo Co., Ltd. Composition d'encre

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