发明名称 |
OVERHEAD PROJECTION HIGHLIGHTING DEVICE AND METHOD OF USE |
摘要 |
OVERHEAD PROJECTION HIGHLIGHTTNG DEVICE AND METHOD OF USE A highlighting device and method of use for focusing audience attention on an overhead projection is disclosed whereby a generally flat color tinted and light transmissive body having upper and lower surfaces with an optional handle and feet is employed as a register/highlighter for aligning and emphasizing an information transparency sheet.
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申请公布号 |
CA2018138(A1) |
申请公布日期 |
1990.12.02 |
申请号 |
CA19902018138 |
申请日期 |
1990.06.01 |
申请人 |
DOWNUM, DANIEL L.;LAFOND, ROBERT L. |
发明人 |
DOWNUM, DANIEL L.;LAFOND, ROBERT L. |
分类号 |
G03B21/26;(IPC1-7):G01D13/22;G03B21/132;G03B21/54 |
主分类号 |
G03B21/26 |
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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