DE58132C - Rechen-Lehtmittel - Google Patents
Rechen-LehtmittelInfo
- Publication number
- DE58132C DE58132C DENDAT58132D DE58132DA DE58132C DE 58132 C DE58132 C DE 58132C DE NDAT58132 D DENDAT58132 D DE NDAT58132D DE 58132D A DE58132D A DE 58132DA DE 58132 C DE58132 C DE 58132C
- Authority
- DE
- Germany
- Prior art keywords
- leaches
- rake
- cubes
- fore
- cube
- 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.)
- Expired - Lifetime
Links
- 238000005553 drilling Methods 0.000 claims 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)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
Hierzu 1 Blatt Zeichnungen.
BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.
Claims (1)
- Patent-Anspruch:Ein Rechen-Lehrmittel, bei dem auf Stäbe Würfel gereiht sind, von welchen bei 'senkrechtem Hängen vier verschiedene Seiten dadurch zur Anschauung gebracht werden können, dafs die Bohrung der Würfel > die Form eines Kreuzes hat.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE58132C true DE58132C (de) |
Family
ID=332457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT58132D Expired - Lifetime DE58132C (de) | Rechen-Lehtmittel |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE58132C (de) |
-
0
- DE DENDAT58132D patent/DE58132C/de not_active Expired - Lifetime
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