DE243972C - - Google Patents

Info

Publication number
DE243972C
DE243972C DENDAT243972D DE243972DA DE243972C DE 243972 C DE243972 C DE 243972C DE NDAT243972 D DENDAT243972 D DE NDAT243972D DE 243972D A DE243972D A DE 243972DA DE 243972 C DE243972 C DE 243972C
Authority
DE
Germany
Prior art keywords
layers
cards
cardboard
different
paper
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.)
Active
Application number
DENDAT243972D
Other languages
German (de)
English (en)
Publication of DE243972C publication Critical patent/DE243972C/de
Active legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper

Landscapes

  • Paper (AREA)
DENDAT243972D Active DE243972C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE243972C true DE243972C (enrdf_load_stackoverflow)

Family

ID=503053

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT243972D Active DE243972C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE243972C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306811A (en) * 1964-04-07 1967-02-28 Gordon F Sylvester Method and apparatus for forming multi-layer, paper test sheets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306811A (en) * 1964-04-07 1967-02-28 Gordon F Sylvester Method and apparatus for forming multi-layer, paper test sheets

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