FR609919A - Improvements to security papers - Google Patents

Improvements to security papers

Info

Publication number
FR609919A
FR609919A FR609919DA FR609919A FR 609919 A FR609919 A FR 609919A FR 609919D A FR609919D A FR 609919DA FR 609919 A FR609919 A FR 609919A
Authority
FR
France
Prior art keywords
security papers
papers
security
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
French (fr)
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.)
TODD CO Inc
Original Assignee
TODD CO Inc
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 TODD CO Inc filed Critical TODD CO Inc
Application granted granted Critical
Publication of FR609919A publication Critical patent/FR609919A/en
Expired 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
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/46—Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators
FR609919D 1925-08-13 1926-01-25 Improvements to security papers Expired FR609919A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50136A US1627254A (en) 1925-08-13 1925-08-13 Safety paper

Publications (1)

Publication Number Publication Date
FR609919A true FR609919A (en) 1926-08-26

Family

ID=21963551

Family Applications (1)

Application Number Title Priority Date Filing Date
FR609919D Expired FR609919A (en) 1925-08-13 1926-01-25 Improvements to security papers

Country Status (3)

Country Link
US (1) US1627254A (en)
FR (1) FR609919A (en)
GB (1) GB256921A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2496127A (en) 2011-10-31 2013-05-08 Aidc Global Ltd A randomly generated identification mark

Also Published As

Publication number Publication date
US1627254A (en) 1927-05-03
GB256921A (en) 1927-05-23

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