CH77556A - Device for illustrating the elementary arithmetic operations - Google Patents

Device for illustrating the elementary arithmetic operations

Info

Publication number
CH77556A
CH77556A CH77556A CH77556DA CH77556A CH 77556 A CH77556 A CH 77556A CH 77556 A CH77556 A CH 77556A CH 77556D A CH77556D A CH 77556DA CH 77556 A CH77556 A CH 77556A
Authority
CH
Switzerland
Prior art keywords
illustrating
arithmetic operations
elementary arithmetic
elementary
operations
Prior art date
Application number
CH77556A
Other languages
German (de)
Inventor
Gottlieb Eberhard
Hans Wyssbrod
Original Assignee
Gottlieb Eberhard
Hans Wyssbrod
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 Gottlieb Eberhard, Hans Wyssbrod filed Critical Gottlieb Eberhard
Publication of CH77556A publication Critical patent/CH77556A/en

Links

CH77556A 1917-12-12 1917-12-12 Device for illustrating the elementary arithmetic operations CH77556A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH77556T 1917-12-12

Publications (1)

Publication Number Publication Date
CH77556A true CH77556A (en) 1918-05-01

Family

ID=4329989

Family Applications (1)

Application Number Title Priority Date Filing Date
CH77556A CH77556A (en) 1917-12-12 1917-12-12 Device for illustrating the elementary arithmetic operations

Country Status (1)

Country Link
CH (1) CH77556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612536A (en) * 1969-09-17 1971-10-12 Rosalie R Saul Word game and teaching assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612536A (en) * 1969-09-17 1971-10-12 Rosalie R Saul Word game and teaching assembly

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