NL16204C - - Google Patents
Info
- Publication number
- NL16204C NL16204C NL16204DA NL16204C NL 16204 C NL16204 C NL 16204C NL 16204D A NL16204D A NL 16204DA NL 16204 C NL16204 C NL 16204C
- Authority
- NL
- Netherlands
Links
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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL16204C true NL16204C (en) |
Family
ID=1784132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL16204D NL16204C (en) |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL16204C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2844890A (en) * | 1954-12-20 | 1958-07-29 | Gerald A Oliver | Mathematics teaching aid |
-
0
- NL NL16204D patent/NL16204C/xx active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2844890A (en) * | 1954-12-20 | 1958-07-29 | Gerald A Oliver | Mathematics teaching aid |
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