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US07978345B2 Guidance system and method 有权
指导制度和方法

Guidance system and method
摘要:
The invention teaches using a directional light source to direct light at a target having directional indicia thereon. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
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