CH44920A - Chalkboard with interchangeable characters - Google Patents
Chalkboard with interchangeable charactersInfo
- Publication number
- CH44920A CH44920A CH44920A CH44920DA CH44920A CH 44920 A CH44920 A CH 44920A CH 44920 A CH44920 A CH 44920A CH 44920D A CH44920D A CH 44920DA CH 44920 A CH44920 A CH 44920A
- Authority
- CH
- Switzerland
- Prior art keywords
- chalkboard
- interchangeable
- characters
- interchangeable characters
- Prior art date
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH44920T | 1908-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH44920A true CH44920A (en) | 1909-10-01 |
Family
ID=4277101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH44920A CH44920A (en) | 1908-10-09 | 1908-10-09 | Chalkboard with interchangeable characters |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH44920A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1056913B (en) * | 1956-07-18 | 1959-05-06 | Kaufmann Metallwerk J C F | Display board with plate-shaped display elements |
-
1908
- 1908-10-09 CH CH44920A patent/CH44920A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1056913B (en) * | 1956-07-18 | 1959-05-06 | Kaufmann Metallwerk J C F | Display board with plate-shaped display elements |
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