DE129527C - - Google Patents
Info
- Publication number
- DE129527C DE129527C DENDAT129527D DE129527DA DE129527C DE 129527 C DE129527 C DE 129527C DE NDAT129527 D DENDAT129527 D DE NDAT129527D DE 129527D A DE129527D A DE 129527DA DE 129527 C DE129527 C DE 129527C
- Authority
- DE
- Germany
- Prior art keywords
- tens
- units
- field
- hundreds
- curtain
- 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
- 238000010276 construction Methods 0.000 description 1
- 238000004804 winding Methods 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)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE129527C true DE129527C (en:Method) |
Family
ID=397982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT129527D Active DE129527C (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE129527C (en:Method) |
-
0
- DE DENDAT129527D patent/DE129527C/de active Active
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