DE240062C - - Google Patents
Info
- Publication number
- DE240062C DE240062C DENDAT240062D DE240062DA DE240062C DE 240062 C DE240062 C DE 240062C DE NDAT240062 D DENDAT240062 D DE NDAT240062D DE 240062D A DE240062D A DE 240062DA DE 240062 C DE240062 C DE 240062C
- Authority
- DE
- Germany
- Prior art keywords
- frame
- writing surface
- board
- school
- full frame
- 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
- 239000000463 material Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 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 |
|---|---|
| DE240062C true DE240062C (https=) |
Family
ID=499454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT240062D Active DE240062C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE240062C (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2891326A (en) * | 1956-01-18 | 1959-06-23 | Fransson Otto Ivar | Luminous chartreading and orientation device |
-
0
- DE DENDAT240062D patent/DE240062C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2891326A (en) * | 1956-01-18 | 1959-06-23 | Fransson Otto Ivar | Luminous chartreading and orientation device |
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