发明名称 |
Sign letter structure |
摘要 |
A sign letter structure for use in an illuminated sign and a composite extruded thermoplastic strip conforming to the periphery of a generally flat letter-form making up the sign, the extruded strip having parallel longitudinally extending spaced opaque sections with a transparent thermoplastic section therebetween, the perimetrical edging of the strip extending inwardly of the frame with the front surface of the edge in contact with the front surface of the letter-form, the transparent section having a convex outer surface and a ridged inner surface for picking up light rays and for diffusing such light rays after they have passed through the transparent section.
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申请公布号 |
US4140405(A) |
申请公布日期 |
1979.02.20 |
申请号 |
US19770785670 |
申请日期 |
1977.04.07 |
申请人 |
ANCHOR PLASTICS COMPANY INC. |
发明人 |
SHAPIRO, JAY B.;BANK, WILLIAM |
分类号 |
G09F13/06;(IPC1-7):G09F13/08 |
主分类号 |
G09F13/06 |
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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