DE297142C - - Google Patents
Info
- Publication number
- DE297142C DE297142C DENDAT297142D DE297142DA DE297142C DE 297142 C DE297142 C DE 297142C DE NDAT297142 D DENDAT297142 D DE NDAT297142D DE 297142D A DE297142D A DE 297142DA DE 297142 C DE297142 C DE 297142C
- Authority
- DE
- Germany
- Prior art keywords
- scale
- counting
- rod
- units
- bodies
- 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
- 239000003086 colorant Substances 0.000 description 2
- 210000004936 left thumb Anatomy 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 210000004905 finger nail Anatomy 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 210000004935 right thumb Anatomy 0.000 description 1
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
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/02—Counting; Calculating
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Calculators And Similar Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE297142C true DE297142C (enrdf_load_stackoverflow) |
Family
ID=551460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT297142D Active DE297142C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE297142C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT297142D patent/DE297142C/de active Active
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