DE117403C - - Google Patents
Info
- Publication number
- DE117403C DE117403C DENDAT117403D DE117403DA DE117403C DE 117403 C DE117403 C DE 117403C DE NDAT117403 D DENDAT117403 D DE NDAT117403D DE 117403D A DE117403D A DE 117403DA DE 117403 C DE117403 C DE 117403C
- Authority
- DE
- Germany
- Prior art keywords
- ruler
- vertical
- blackboard
- lines
- board
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/02—Slates
Landscapes
- Drawing Aids And Blackboards (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE117403C true DE117403C (https=) |
Family
ID=386671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT117403D Active DE117403C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE117403C (https=) |
-
0
- DE DENDAT117403D patent/DE117403C/de active Active
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