CH319511A - Blackboard - Google Patents

Blackboard

Info

Publication number
CH319511A
CH319511A CH319511DA CH319511A CH 319511 A CH319511 A CH 319511A CH 319511D A CH319511D A CH 319511DA CH 319511 A CH319511 A CH 319511A
Authority
CH
Switzerland
Prior art keywords
blackboard
Prior art date
Application number
Other languages
French (fr)
Inventor
Reuse-Delley Martial
Original Assignee
Reuse Delley Martial
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 Reuse Delley Martial filed Critical Reuse Delley Martial
Publication of CH319511A publication Critical patent/CH319511A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D19/00—Movable-strip writing or reading apparatus
    • 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
    • B43L1/08—Blackboards flexible
CH319511D 1955-02-01 1955-02-01 Blackboard CH319511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH319511T 1955-02-01

Publications (1)

Publication Number Publication Date
CH319511A true CH319511A (en) 1957-02-28

Family

ID=4497636

Family Applications (1)

Application Number Title Priority Date Filing Date
CH319511D CH319511A (en) 1955-02-01 1955-02-01 Blackboard

Country Status (1)

Country Link
CH (1) CH319511A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397032A1 (en) * 1977-07-08 1979-02-02 Visu Int De WORKING TABLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397032A1 (en) * 1977-07-08 1979-02-02 Visu Int De WORKING TABLE

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