FR753592A - Appareil à nettoyer des tableaux noirs, etc. - Google Patents

Appareil à nettoyer des tableaux noirs, etc.

Info

Publication number
FR753592A
FR753592A FR753592DA FR753592A FR 753592 A FR753592 A FR 753592A FR 753592D A FR753592D A FR 753592DA FR 753592 A FR753592 A FR 753592A
Authority
FR
France
Prior art keywords
blackboards
cleaning
cleaning blackboards
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
Alfred Hesslinger
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 FR753592A publication Critical patent/FR753592A/fr
Expired 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
    • B43L21/00—Blackboard or slate cleaning devices
FR753592D 1932-04-03 1933-04-01 Appareil à nettoyer des tableaux noirs, etc. Expired FR753592A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH131241D DE587339C (de) 1932-04-03 1932-04-03 Reinigungsgeraet mit Schwamm und Gummistreifen, insbesondere fuer Schulwandtafeln

Publications (1)

Publication Number Publication Date
FR753592A true FR753592A (fr) 1933-10-19

Family

ID=7176323

Family Applications (1)

Application Number Title Priority Date Filing Date
FR753592D Expired FR753592A (fr) 1932-04-03 1933-04-01 Appareil à nettoyer des tableaux noirs, etc.

Country Status (2)

Country Link
DE (1) DE587339C (fr)
FR (1) FR753592A (fr)

Also Published As

Publication number Publication date
DE587339C (de) 1933-11-02

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