| 发明名称 |
Projection screens and methods for making such projection screens |
| 摘要 |
Projection screens and convenient and efficient methods of making such projection screens are provided. Recycled glass is reformed to provide glass microspheres of sufficient quality for use in a projection screen.
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| 申请公布号 |
US2002141054(A1) |
申请公布日期 |
2002.10.03 |
| 申请号 |
US20010823025 |
申请日期 |
2001.03.30 |
| 申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
STEVENSON JAMES A.;MORRIS GEOFFREY P. |
| 分类号 |
G03B21/62;C03B19/10;G03B21/60;(IPC1-7):G03B21/60 |
主分类号 |
G03B21/62 |
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