DE217318C - - Google Patents
Info
- Publication number
- DE217318C DE217318C DENDAT217318D DE217318DA DE217318C DE 217318 C DE217318 C DE 217318C DE NDAT217318 D DENDAT217318 D DE NDAT217318D DE 217318D A DE217318D A DE 217318DA DE 217318 C DE217318 C DE 217318C
- Authority
- DE
- Germany
- Prior art keywords
- rod
- hand
- sight
- working position
- possibly
- 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
- G09B11/00—Teaching hand-writing, shorthand, drawing, or painting
- G09B11/02—Finger, hand or arm supporting devices
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
DE217318C true DE217318C (enrdf_load_stackoverflow) |
Family
ID=478632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT217318D Active DE217318C (enrdf_load_stackoverflow) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE217318C (enrdf_load_stackoverflow) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2740599A (en) * | 1951-10-09 | 1956-04-03 | Jr William C Roberts-Horsfield | Stabilized aircraft seat |
US2880511A (en) * | 1955-01-12 | 1959-04-07 | Steinwachs Friedrich | Apparatus for determining adaptability of writing implements to persons using the same |
US5190388A (en) * | 1990-11-05 | 1993-03-02 | Lee Suk H | Writing instrument with water level indicator |
-
0
- DE DENDAT217318D patent/DE217318C/de active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2740599A (en) * | 1951-10-09 | 1956-04-03 | Jr William C Roberts-Horsfield | Stabilized aircraft seat |
US2880511A (en) * | 1955-01-12 | 1959-04-07 | Steinwachs Friedrich | Apparatus for determining adaptability of writing implements to persons using the same |
US5190388A (en) * | 1990-11-05 | 1993-03-02 | Lee Suk H | Writing instrument with water level indicator |
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