CH53266A - Schreibtafel mit Rechenlehrmittel - Google Patents
Schreibtafel mit RechenlehrmittelInfo
- Publication number
- CH53266A CH53266A CH53266A CH53266DA CH53266A CH 53266 A CH53266 A CH 53266A CH 53266 A CH53266 A CH 53266A CH 53266D A CH53266D A CH 53266DA CH 53266 A CH53266 A CH 53266A
- Authority
- CH
- Switzerland
- Prior art keywords
- aids
- arithmetic
- writing board
- writing
- board
- Prior art date
Links
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH53266T | 1911-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH53266A true CH53266A (de) | 1912-02-01 |
Family
ID=4291702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH53266A CH53266A (de) | 1911-06-01 | 1911-06-01 | Schreibtafel mit Rechenlehrmittel |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH53266A (de) |
-
1911
- 1911-06-01 CH CH53266A patent/CH53266A/de unknown
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