DE86632C - - Google Patents

Info

Publication number
DE86632C
DE86632C DENDAT86632D DE86632DA DE86632C DE 86632 C DE86632 C DE 86632C DE NDAT86632 D DENDAT86632 D DE NDAT86632D DE 86632D A DE86632D A DE 86632DA DE 86632 C DE86632 C DE 86632C
Authority
DE
Germany
Prior art keywords
glass
cryolite
emery
quartz
additives
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
DENDAT86632D
Other languages
German (de)
Publication of DE86632C publication Critical patent/DE86632C/de
Active legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)

Description

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICHSDRUCKEREI.

Claims (1)

Patent-Anspruch:Patent claim: Ein Verfahren zur Herstellung von abwäschbaren Schreibflächen der durch Patent Nr. 69129 geschützten Art, dadurch gekennzeichnet, dafs die Zusätze zum Wasserglas durch Kryolith oder gebrannten Thon mit oder ohne Zusätze von Glas, Quarz, Schmirgel oder Pulver ersetzt sind.A method of making washable writing surfaces of the type described by Patent No. 69129 protected species, characterized in that the additives to the water glass by cryolite or baked clay with or without the addition of glass, quartz, emery or powder are.
DENDAT86632D Active DE86632C (en)

Publications (1)

Publication Number Publication Date
DE86632C true DE86632C (en)

Family

ID=358671

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT86632D Active DE86632C (en)

Country Status (1)

Country Link
DE (1) DE86632C (en)

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