JPH0753994Y2 - 電子黒板装置 - Google Patents
電子黒板装置Info
- Publication number
- JPH0753994Y2 JPH0753994Y2 JP1677590U JP1677590U JPH0753994Y2 JP H0753994 Y2 JPH0753994 Y2 JP H0753994Y2 JP 1677590 U JP1677590 U JP 1677590U JP 1677590 U JP1677590 U JP 1677590U JP H0753994 Y2 JPH0753994 Y2 JP H0753994Y2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- sheet
- plate face
- frame
- reinforcing metal
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 21
- 125000006850 spacer group Chemical group 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 238000007639 printing Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Drawing Aids And Blackboards (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1677590U JPH0753994Y2 (ja) | 1990-02-23 | 1990-02-23 | 電子黒板装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1677590U JPH0753994Y2 (ja) | 1990-02-23 | 1990-02-23 | 電子黒板装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03108484U JPH03108484U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-11-07 |
| JPH0753994Y2 true JPH0753994Y2 (ja) | 1995-12-13 |
Family
ID=31520029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1677590U Expired - Lifetime JPH0753994Y2 (ja) | 1990-02-23 | 1990-02-23 | 電子黒板装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753994Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
1990
- 1990-02-23 JP JP1677590U patent/JPH0753994Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03108484U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-11-07 |