JPS55132297A - Rotary blackboard - Google Patents
Rotary blackboardInfo
- Publication number
- JPS55132297A JPS55132297A JP3931979A JP3931979A JPS55132297A JP S55132297 A JPS55132297 A JP S55132297A JP 3931979 A JP3931979 A JP 3931979A JP 3931979 A JP3931979 A JP 3931979A JP S55132297 A JPS55132297 A JP S55132297A
- Authority
- JP
- Japan
- Prior art keywords
- rotary blackboard
- blackboard
- rotary
- 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
Landscapes
- Drawing Aids And Blackboards (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3931979A JPS55132297A (en) | 1979-04-03 | 1979-04-03 | Rotary blackboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3931979A JPS55132297A (en) | 1979-04-03 | 1979-04-03 | Rotary blackboard |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55132297A true JPS55132297A (en) | 1980-10-14 |
JPS5725399B2 JPS5725399B2 (en) | 1982-05-29 |
Family
ID=12549780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3931979A Granted JPS55132297A (en) | 1979-04-03 | 1979-04-03 | Rotary blackboard |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55132297A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63197697A (en) * | 1987-02-12 | 1988-08-16 | 富士ゼロックス株式会社 | Eraser for electronic blackboard |
CN112248686A (en) * | 2020-10-22 | 2021-01-22 | 邱玲玲 | Blackboard curtain type easy-to-clean blackboard |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58159597U (en) * | 1982-04-19 | 1983-10-24 | 狭山精密工業株式会社 | Sound quality improvement mechanism in bell timer |
JPH0428157Y2 (en) * | 1985-03-29 | 1992-07-07 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4314106Y1 (en) * | 1965-05-07 | 1968-06-14 | ||
JPS5013142U (en) * | 1973-05-31 | 1975-02-12 | ||
JPS5331540U (en) * | 1976-08-23 | 1978-03-18 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3777090A (en) * | 1972-07-26 | 1973-12-04 | Datanetics Corp | Linear cam actuated diaphragm switch with lost motion actuator |
-
1979
- 1979-04-03 JP JP3931979A patent/JPS55132297A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4314106Y1 (en) * | 1965-05-07 | 1968-06-14 | ||
JPS5013142U (en) * | 1973-05-31 | 1975-02-12 | ||
JPS5331540U (en) * | 1976-08-23 | 1978-03-18 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63197697A (en) * | 1987-02-12 | 1988-08-16 | 富士ゼロックス株式会社 | Eraser for electronic blackboard |
CN112248686A (en) * | 2020-10-22 | 2021-01-22 | 邱玲玲 | Blackboard curtain type easy-to-clean blackboard |
Also Published As
Publication number | Publication date |
---|---|
JPS5725399B2 (en) | 1982-05-29 |
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