DE89312C - - Google Patents
Info
- Publication number
- DE89312C DE89312C DENDAT89312D DE89312DA DE89312C DE 89312 C DE89312 C DE 89312C DE NDAT89312 D DENDAT89312 D DE NDAT89312D DE 89312D A DE89312D A DE 89312DA DE 89312 C DE89312 C DE 89312C
- Authority
- DE
- Germany
- Prior art keywords
- blind
- writing
- written
- cutouts
- sheet
- 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
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B21/00—Teaching, or communicating with, the blind, deaf or mute
- G09B21/001—Teaching or communicating with blind persons
- G09B21/002—Writing aids for blind persons
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Credit Cards Or The Like (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE89312C true DE89312C (https=) |
Family
ID=361138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT89312D Active DE89312C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE89312C (https=) |
-
0
- DE DENDAT89312D patent/DE89312C/de active Active
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