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发明名称
Graffiti protection
摘要
Surfaces are protected from graffiti by panels of rotatable rollers. The rollers are rotated in random patterns to scramble or conceal graffiti. The rollers are removed for cleaning.
申请公布号
US4034523(A)
申请公布日期
1977.07.12
申请号
US19750618786
申请日期
1975.10.02
申请人
SAUNDERS, REGINALD E.
发明人
SAUNDERS, REGINALD E.
分类号
E04G21/30;(IPC1-7):G09B1/00;G09F11/02
主分类号
E04G21/30
代理机构
代理人
主权项
地址
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