BE494479A - - Google Patents
Info
- Publication number
- BE494479A BE494479A BE494479DA BE494479A BE 494479 A BE494479 A BE 494479A BE 494479D A BE494479D A BE 494479DA BE 494479 A BE494479 A BE 494479A
- Authority
- BE
- Belgium
- Prior art keywords
- contact
- boxes
- circuit
- group
- conductors
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 2
- 241000518994 Conta Species 0.000 claims 1
- 241000270728 Alligator Species 0.000 description 1
- 229920001342 Bakelite® Polymers 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002023 wood 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
- G09B19/025—Counting; Calculating with electrically operated apparatus or devices
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)
- Instructional Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE494479A true BE494479A (instruction) |
Family
ID=138226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE494479D BE494479A (instruction) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE494479A (instruction) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2932908A (en) * | 1959-07-28 | 1960-04-19 | John A Gough | Training aid |
-
0
- BE BE494479D patent/BE494479A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2932908A (en) * | 1959-07-28 | 1960-04-19 | John A Gough | Training aid |
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