FR1518669A - Tableau noir à effaçage automatique - Google Patents

Tableau noir à effaçage automatique

Info

Publication number
FR1518669A
FR1518669A FR80483A FR80483A FR1518669A FR 1518669 A FR1518669 A FR 1518669A FR 80483 A FR80483 A FR 80483A FR 80483 A FR80483 A FR 80483A FR 1518669 A FR1518669 A FR 1518669A
Authority
FR
France
Prior art keywords
self
erasing blackboard
blackboard
erasing
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
FR80483A
Other languages
English (en)
Inventor
Noel Albert Eugene Robert
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
Priority to FR80483A priority Critical patent/FR1518669A/fr
Application granted granted Critical
Publication of FR1518669A publication Critical patent/FR1518669A/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
FR80483A 1966-10-18 1966-10-18 Tableau noir à effaçage automatique Expired FR1518669A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR80483A FR1518669A (fr) 1966-10-18 1966-10-18 Tableau noir à effaçage automatique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR80483A FR1518669A (fr) 1966-10-18 1966-10-18 Tableau noir à effaçage automatique

Publications (1)

Publication Number Publication Date
FR1518669A true FR1518669A (fr) 1968-03-29

Family

ID=8619386

Family Applications (1)

Application Number Title Priority Date Filing Date
FR80483A Expired FR1518669A (fr) 1966-10-18 1966-10-18 Tableau noir à effaçage automatique

Country Status (1)

Country Link
FR (1) FR1518669A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0689942A1 (fr) * 1994-06-29 1996-01-03 Kiyoharu Kawashima Dispositif pour tableau d'écriture
EP0786358A1 (fr) * 1995-08-17 1997-07-30 Ricoh Elemex Corporation Panneau d'ecriture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0689942A1 (fr) * 1994-06-29 1996-01-03 Kiyoharu Kawashima Dispositif pour tableau d'écriture
US5649828A (en) * 1994-06-29 1997-07-22 Kiyoharu Kawashima Writing board system
EP0786358A1 (fr) * 1995-08-17 1997-07-30 Ricoh Elemex Corporation Panneau d'ecriture
EP0786358A4 (fr) * 1995-08-17 1999-02-03 Ricoh Elemex Corp Panneau d'ecriture
US5957700A (en) * 1995-08-17 1999-09-28 Ricoh Elemex Corporation Writing board

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