| 发明名称 |
RETROREFLECTIVE MICROSPHERES HAVING A DIELECTRIC MIRROR ON A PORTION OF THEIR SURFACE AND RETROREFLECTIVE CONSTRUCTIONS CONTAINING SUCH MICROSPHERES |
| 摘要 |
Retroreflective constructions containing microspheres with adjacent dielectric mirrors. Also microspheres having a plurality of coatings on a portion of their surface to form a dielectric mirror thereon.
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| 申请公布号 |
US3700305(A) |
申请公布日期 |
1972.10.24 |
| 申请号 |
USD3700305 |
申请日期 |
1970.12.14 |
| 申请人 |
MINNESOTA MINING AND MFG. CO. |
发明人 |
WALLACE KARL BINGHAM |
| 分类号 |
G02B5/128;(IPC1-7):G02B5/12 |
主分类号 |
G02B5/128 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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