FR1151314A - Perfectionnements aux tableaux noirs - Google Patents

Perfectionnements aux tableaux noirs

Info

Publication number
FR1151314A
FR1151314A FR1151314DA FR1151314A FR 1151314 A FR1151314 A FR 1151314A FR 1151314D A FR1151314D A FR 1151314DA FR 1151314 A FR1151314 A FR 1151314A
Authority
FR
France
Prior art keywords
blackboard
refinements
blackboard refinements
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BO FIM TORINO DITTA AUGUSTO BO
Original Assignee
BO FIM TORINO DITTA AUGUSTO BO
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 by BO FIM TORINO DITTA AUGUSTO BO filed Critical BO FIM TORINO DITTA AUGUSTO BO
Application granted granted Critical
Publication of FR1151314A publication Critical patent/FR1151314A/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
    • B43L1/04—Blackboards
    • B43L1/10—Writing surfaces thereof
FR1151314D 1956-06-08 1956-06-08 Perfectionnements aux tableaux noirs Expired FR1151314A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1151314T 1956-06-08

Publications (1)

Publication Number Publication Date
FR1151314A true FR1151314A (fr) 1958-01-29

Family

ID=9647874

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1151314D Expired FR1151314A (fr) 1956-06-08 1956-06-08 Perfectionnements aux tableaux noirs

Country Status (1)

Country Link
FR (1) FR1151314A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572334A1 (fr) * 1984-10-25 1986-05-02 Pierre Richard Procede pour la fabrication d'une ardoise pour ecrire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572334A1 (fr) * 1984-10-25 1986-05-02 Pierre Richard Procede pour la fabrication d'une ardoise pour ecrire

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