CA786531A - Light ray educational apparatus - Google Patents
Light ray educational apparatusInfo
- Publication number
- CA786531A CA786531A CA786531A CA786531DA CA786531A CA 786531 A CA786531 A CA 786531A CA 786531 A CA786531 A CA 786531A CA 786531D A CA786531D A CA 786531DA CA 786531 A CA786531 A CA 786531A
- Authority
- CA
- Canada
- Prior art keywords
- light ray
- educational apparatus
- educational
- ray
- light
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA786531T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA786531A true CA786531A (en) | 1968-06-04 |
Family
ID=36249185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA786531A Expired CA786531A (en) | Light ray educational apparatus |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA786531A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5108293A (en) * | 1990-09-14 | 1992-04-28 | Edmund Scientific Company | Method and apparatus for displaying a beam of light |
-
0
- CA CA786531A patent/CA786531A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5108293A (en) * | 1990-09-14 | 1992-04-28 | Edmund Scientific Company | Method and apparatus for displaying a beam of light |
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