BE407722A - - Google Patents

Info

Publication number
BE407722A
BE407722A BE407722DA BE407722A BE 407722 A BE407722 A BE 407722A BE 407722D A BE407722D A BE 407722DA BE 407722 A BE407722 A BE 407722A
Authority
BE
Belgium
Application number
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.)
Publication of BE407722A publication Critical patent/BE407722A/xx

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53552—Valve applying or removing
BE407722D 1934-02-08 BE407722A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE434867X 1934-02-08

Publications (1)

Publication Number Publication Date
BE407722A true BE407722A (fr)

Family

ID=6506689

Family Applications (1)

Application Number Title Priority Date Filing Date
BE407722D BE407722A (fr) 1934-02-08

Country Status (5)

Country Link
US (1) US2083206A (fr)
BE (1) BE407722A (fr)
FR (1) FR786352A (fr)
GB (1) GB434867A (fr)
NL (1) NL39477C (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505470A (en) * 1944-01-31 1950-04-25 Ncr Co Pressure sensitive record material
BE480326A (fr) * 1944-01-31
US2653110A (en) * 1948-03-17 1953-09-22 Standard Register Co Manifolding transfer and method of making
US2663653A (en) * 1948-03-17 1953-12-22 Standard Register Co Manifold sheet and process of making same
US2663579A (en) * 1948-03-17 1953-12-22 Standard Register Co Manifolding transfer and method of making
US2826511A (en) * 1954-08-10 1958-03-11 Messinger Emanuel Method and product of water writing and marking
US2874977A (en) * 1957-02-14 1959-02-24 Zenith Radio Corp Code card device
US3511608A (en) * 1967-12-14 1970-05-12 Harold P Anderson Multiple layer paper test strip
US3707300A (en) * 1971-09-01 1972-12-26 Robert J Tamburro Tamperproof serial number
US4231593A (en) * 1978-02-21 1980-11-04 Centurion Data Corporation Check with electrically conductive layer
US4437935A (en) * 1981-06-03 1984-03-20 Crane And Company Method and apparatus for providing security features in paper
US5234732A (en) * 1991-03-18 1993-08-10 Philip Morris Inc. Tamper-indicating wrappers

Also Published As

Publication number Publication date
GB434867A (en) 1935-09-10
US2083206A (en) 1937-06-08
FR786352A (fr) 1935-09-02
NL39477C (fr)

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