DE171892C - - Google Patents
Info
- Publication number
- DE171892C DE171892C DENDAT171892D DE171892DA DE171892C DE 171892 C DE171892 C DE 171892C DE NDAT171892 D DENDAT171892 D DE NDAT171892D DE 171892D A DE171892D A DE 171892DA DE 171892 C DE171892 C DE 171892C
- Authority
- DE
- Germany
- Prior art keywords
- ring
- back support
- correct
- student
- straight
- 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
-
- 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
- B43L15/00—Supports for attachment to hands or arms for facilitating writing or drawing
Landscapes
- Orthopedics, Nursing, And Contraception (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE171892C true DE171892C (cs) |
Family
ID=436827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT171892D Active DE171892C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE171892C (cs) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617919A (en) * | 1983-09-06 | 1986-10-21 | Theradyne Corporation | Wheelchair with posture supports |
-
0
- DE DENDAT171892D patent/DE171892C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617919A (en) * | 1983-09-06 | 1986-10-21 | Theradyne Corporation | Wheelchair with posture supports |
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