CH73304A - Ruling and calculating apparatus for teaching purposes - Google Patents

Ruling and calculating apparatus for teaching purposes

Info

Publication number
CH73304A
CH73304A CH73304A CH73304DA CH73304A CH 73304 A CH73304 A CH 73304A CH 73304 A CH73304 A CH 73304A CH 73304D A CH73304D A CH 73304DA CH 73304 A CH73304 A CH 73304A
Authority
CH
Switzerland
Prior art keywords
ruling
calculating apparatus
teaching purposes
teaching
purposes
Prior art date
Application number
CH73304A
Other languages
German (de)
Inventor
Julius Arvin Georg
Original Assignee
Julius Arvin Georg
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 Julius Arvin Georg filed Critical Julius Arvin Georg
Publication of CH73304A publication Critical patent/CH73304A/en

Links

CH73304A 1916-05-02 1916-05-02 Ruling and calculating apparatus for teaching purposes CH73304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH73304T 1916-05-02

Publications (1)

Publication Number Publication Date
CH73304A true CH73304A (en) 1916-09-16

Family

ID=4323435

Family Applications (1)

Application Number Title Priority Date Filing Date
CH73304A CH73304A (en) 1916-05-02 1916-05-02 Ruling and calculating apparatus for teaching purposes

Country Status (1)

Country Link
CH (1) CH73304A (en)

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