FR662579A - Improvements to electrical exhibition devices - Google Patents
Improvements to electrical exhibition devicesInfo
- Publication number
- FR662579A FR662579A FR662579DA FR662579A FR 662579 A FR662579 A FR 662579A FR 662579D A FR662579D A FR 662579DA FR 662579 A FR662579 A FR 662579A
- Authority
- FR
- France
- Prior art keywords
- exhibition devices
- electrical
- electrical exhibition
- devices
- exhibition
- 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.)
- Expired
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
- G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
- G09B29/10—Map spot or coordinate position indicators; Map reading aids
- G09B29/102—Map spot or coordinate position indicators; Map reading aids using electrical means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB662579X | 1927-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR662579A true FR662579A (en) | 1929-08-08 |
Family
ID=10491045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR662579D Expired FR662579A (en) | 1927-10-26 | 1928-10-19 | Improvements to electrical exhibition devices |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR662579A (en) |
-
1928
- 1928-10-19 FR FR662579D patent/FR662579A/en not_active Expired
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