BE640223A - - Google Patents
Info
- Publication number
- BE640223A BE640223A BE640223DA BE640223A BE 640223 A BE640223 A BE 640223A BE 640223D A BE640223D A BE 640223DA BE 640223 A BE640223 A BE 640223A
- Authority
- BE
- Belgium
- Prior art keywords
- desc
- clms
- attention
- page number
- contain start
- Prior art date
Links
Classifications
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- 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)
- Diaphragms For Electromechanical Transducers (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE640223A true BE640223A (https=) |
Family
ID=204219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE640223D BE640223A (https=) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE640223A (https=) |
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0
- BE BE640223D patent/BE640223A/fr unknown