CH46423A - School blackboard - Google Patents
School blackboardInfo
- Publication number
- CH46423A CH46423A CH46423A CH46423DA CH46423A CH 46423 A CH46423 A CH 46423A CH 46423 A CH46423 A CH 46423A CH 46423D A CH46423D A CH 46423DA CH 46423 A CH46423 A CH 46423A
- Authority
- CH
- Switzerland
- Prior art keywords
- school blackboard
- blackboard
- school
- Prior art date
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH46423T | 1909-02-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH46423A true CH46423A (en) | 1910-03-01 |
Family
ID=4279928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH46423A CH46423A (en) | 1909-02-03 | 1909-02-03 | School blackboard |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH46423A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3066991A (en) * | 1961-01-18 | 1962-12-04 | Kummeth Mfg Company | Collapsible auto desk |
-
1909
- 1909-02-03 CH CH46423A patent/CH46423A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3066991A (en) * | 1961-01-18 | 1962-12-04 | Kummeth Mfg Company | Collapsible auto desk |
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