JPH0442833Y2 - - Google Patents

Info

Publication number
JPH0442833Y2
JPH0442833Y2 JP1987019314U JP1931487U JPH0442833Y2 JP H0442833 Y2 JPH0442833 Y2 JP H0442833Y2 JP 1987019314 U JP1987019314 U JP 1987019314U JP 1931487 U JP1931487 U JP 1931487U JP H0442833 Y2 JPH0442833 Y2 JP H0442833Y2
Authority
JP
Japan
Prior art keywords
worm
screen
upper column
rotation mechanism
support
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
JP1987019314U
Other languages
English (en)
Japanese (ja)
Other versions
JPS63128542U (de
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 JP1987019314U priority Critical patent/JPH0442833Y2/ja
Publication of JPS63128542U publication Critical patent/JPS63128542U/ja
Application granted granted Critical
Publication of JPH0442833Y2 publication Critical patent/JPH0442833Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
JP1987019314U 1987-02-12 1987-02-12 Expired JPH0442833Y2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987019314U JPH0442833Y2 (de) 1987-02-12 1987-02-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987019314U JPH0442833Y2 (de) 1987-02-12 1987-02-12

Publications (2)

Publication Number Publication Date
JPS63128542U JPS63128542U (de) 1988-08-23
JPH0442833Y2 true JPH0442833Y2 (de) 1992-10-09

Family

ID=30813805

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987019314U Expired JPH0442833Y2 (de) 1987-02-12 1987-02-12

Country Status (1)

Country Link
JP (1) JPH0442833Y2 (de)

Also Published As

Publication number Publication date
JPS63128542U (de) 1988-08-23

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