FR579560A - Perfectionnements apportés aux tablettes à effaçage rapide - Google Patents

Perfectionnements apportés aux tablettes à effaçage rapide

Info

Publication number
FR579560A
FR579560A FR579560DA FR579560A FR 579560 A FR579560 A FR 579560A FR 579560D A FR579560D A FR 579560DA FR 579560 A FR579560 A FR 579560A
Authority
FR
France
Prior art keywords
erase
tablets
quick
erase tablets
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
Mario Pesenti
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 FR579560A publication Critical patent/FR579560A/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
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/12—Repeatedly-usable boards or tablets for writing or drawing having translucent writing surfaces producing visual impressions by co-operation with backing members
    • B43L1/123—Flexible writing surface or backing
    • B43L1/126—Flexible writing surface or backing withinterposed adhesive substances
FR579560D 1924-03-29 1924-03-29 Perfectionnements apportés aux tablettes à effaçage rapide Expired FR579560A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR579560T 1924-03-29

Publications (1)

Publication Number Publication Date
FR579560A true FR579560A (fr) 1924-10-20

Family

ID=8956213

Family Applications (1)

Application Number Title Priority Date Filing Date
FR579560D Expired FR579560A (fr) 1924-03-29 1924-03-29 Perfectionnements apportés aux tablettes à effaçage rapide

Country Status (1)

Country Link
FR (1) FR579560A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405460A (en) * 1966-05-17 1968-10-15 Michaelson Sylvia Mathematics teaching device
US4589685A (en) * 1984-08-02 1986-05-20 Allan Lazar Changeable labelling system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405460A (en) * 1966-05-17 1968-10-15 Michaelson Sylvia Mathematics teaching device
US4589685A (en) * 1984-08-02 1986-05-20 Allan Lazar Changeable labelling system

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