JPH0487874U - - Google Patents
Info
- Publication number
- JPH0487874U JPH0487874U JP13084290U JP13084290U JPH0487874U JP H0487874 U JPH0487874 U JP H0487874U JP 13084290 U JP13084290 U JP 13084290U JP 13084290 U JP13084290 U JP 13084290U JP H0487874 U JPH0487874 U JP H0487874U
- Authority
- JP
- Japan
- Prior art keywords
- transparent plate
- window
- opening
- visual
- aging
- 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.)
- Granted
Links
- 230000000007 visual effect Effects 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 3
Landscapes
- Instructional Devices (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13084290U JP2501237Y2 (ja) | 1990-11-30 | 1990-11-30 | 視覚老化体験装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13084290U JP2501237Y2 (ja) | 1990-11-30 | 1990-11-30 | 視覚老化体験装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0487874U true JPH0487874U (cs) | 1992-07-30 |
| JP2501237Y2 JP2501237Y2 (ja) | 1996-06-12 |
Family
ID=31878156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13084290U Expired - Fee Related JP2501237Y2 (ja) | 1990-11-30 | 1990-11-30 | 視覚老化体験装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501237Y2 (cs) |
-
1990
- 1990-11-30 JP JP13084290U patent/JP2501237Y2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2501237Y2 (ja) | 1996-06-12 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |