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
Links
- 239000011888 foil Substances 0.000 claims description 17
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987019314U JPH0442833Y2 (US20020051482A1-20020502-M00012.png) | 1987-02-12 | 1987-02-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987019314U JPH0442833Y2 (US20020051482A1-20020502-M00012.png) | 1987-02-12 | 1987-02-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63128542U JPS63128542U (US20020051482A1-20020502-M00012.png) | 1988-08-23 |
| JPH0442833Y2 true JPH0442833Y2 (US20020051482A1-20020502-M00012.png) | 1992-10-09 |
Family
ID=30813805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987019314U Expired JPH0442833Y2 (US20020051482A1-20020502-M00012.png) | 1987-02-12 | 1987-02-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442833Y2 (US20020051482A1-20020502-M00012.png) |
-
1987
- 1987-02-12 JP JP1987019314U patent/JPH0442833Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63128542U (US20020051482A1-20020502-M00012.png) | 1988-08-23 |
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