JPH0446956Y2 - - Google Patents

Info

Publication number
JPH0446956Y2
JPH0446956Y2 JP1989050899U JP5089989U JPH0446956Y2 JP H0446956 Y2 JPH0446956 Y2 JP H0446956Y2 JP 1989050899 U JP1989050899 U JP 1989050899U JP 5089989 U JP5089989 U JP 5089989U JP H0446956 Y2 JPH0446956 Y2 JP H0446956Y2
Authority
JP
Japan
Prior art keywords
blackboard
writing surface
whiteboard
section
reading head
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
Application number
JP1989050899U
Other languages
English (en)
Japanese (ja)
Other versions
JPH01166581U (en]
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1989050899U priority Critical patent/JPH0446956Y2/ja
Publication of JPH01166581U publication Critical patent/JPH01166581U/ja
Application granted granted Critical
Publication of JPH0446956Y2 publication Critical patent/JPH0446956Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Scanning Arrangements (AREA)
JP1989050899U 1989-04-28 1989-04-28 Expired JPH0446956Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989050899U JPH0446956Y2 (en]) 1989-04-28 1989-04-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989050899U JPH0446956Y2 (en]) 1989-04-28 1989-04-28

Publications (2)

Publication Number Publication Date
JPH01166581U JPH01166581U (en]) 1989-11-22
JPH0446956Y2 true JPH0446956Y2 (en]) 1992-11-05

Family

ID=31276926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989050899U Expired JPH0446956Y2 (en]) 1989-04-28 1989-04-28

Country Status (1)

Country Link
JP (1) JPH0446956Y2 (en])

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5640341B2 (en]) * 1974-04-30 1981-09-19
JPS5453337U (en]) * 1977-09-22 1979-04-13
JPS5527889U (en]) * 1978-08-14 1980-02-22

Also Published As

Publication number Publication date
JPH01166581U (en]) 1989-11-22

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