CH22700A - School blackboard - Google Patents

School blackboard

Info

Publication number
CH22700A
CH22700A CH22700A CH22700DA CH22700A CH 22700 A CH22700 A CH 22700A CH 22700 A CH22700 A CH 22700A CH 22700D A CH22700D A CH 22700DA CH 22700 A CH22700 A CH 22700A
Authority
CH
Switzerland
Prior art keywords
school blackboard
blackboard
school
Prior art date
Application number
CH22700A
Other languages
German (de)
Inventor
A Luethi-Weber
Original Assignee
Luethi Weber A
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 Luethi Weber A filed Critical Luethi Weber A
Publication of CH22700A publication Critical patent/CH22700A/en

Links

CH22700A 1901-12-14 1901-12-14 School blackboard CH22700A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH22700T 1901-12-14

Publications (1)

Publication Number Publication Date
CH22700A true CH22700A (en) 1902-03-15

Family

ID=4229823

Family Applications (1)

Application Number Title Priority Date Filing Date
CH22700A CH22700A (en) 1901-12-14 1901-12-14 School blackboard

Country Status (1)

Country Link
CH (1) CH22700A (en)

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