JPS6425190U - - Google Patents
Info
- Publication number
- JPS6425190U JPS6425190U JP12089687U JP12089687U JPS6425190U JP S6425190 U JPS6425190 U JP S6425190U JP 12089687 U JP12089687 U JP 12089687U JP 12089687 U JP12089687 U JP 12089687U JP S6425190 U JPS6425190 U JP S6425190U
- Authority
- JP
- Japan
- Prior art keywords
- medium
- writing medium
- writing
- mark
- electric signal
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims 1
Landscapes
- Drawing Aids And Blackboards (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12089687U JPS6425190U (ko) | 1987-08-06 | 1987-08-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12089687U JPS6425190U (ko) | 1987-08-06 | 1987-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6425190U true JPS6425190U (ko) | 1989-02-10 |
Family
ID=31367418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12089687U Pending JPS6425190U (ko) | 1987-08-06 | 1987-08-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6425190U (ko) |
-
1987
- 1987-08-06 JP JP12089687U patent/JPS6425190U/ja active Pending
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