DE146820C - - Google Patents
Info
- Publication number
- DE146820C DE146820C DENDAT146820D DE146820DA DE146820C DE 146820 C DE146820 C DE 146820C DE NDAT146820 D DENDAT146820 D DE NDAT146820D DE 146820D A DE146820D A DE 146820DA DE 146820 C DE146820 C DE 146820C
- Authority
- DE
- Germany
- Prior art keywords
- guide
- frame
- slide
- beads
- attached
- 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
- 239000002184 metal Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
- 239000011324 bead Substances 0.000 description 5
- 239000003086 colorant Substances 0.000 description 1
- 239000010454 slate Substances 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)
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE146820C true DE146820C (enrdf_load_stackoverflow) |
Family
ID=414057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT146820D Active DE146820C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE146820C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT146820D patent/DE146820C/de active Active
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