发明名称 MANUALLY OPERABLE SCROLLING WEB SIGN
摘要 <p>A scrolling sign includes a plurality of webs (90, 91, 92, 93) each having indicia which is displayed through a window (27, 28, 30, 31) on a sign face. The webs are disposed in alignment with one another. A switch (38) controls a clutch associated with each of the scrolling webs for selectively connecting a manual crank mechanism (24) with one of the scrolling webs.</p>
申请公布号 WO1994003886(A1) 申请公布日期 1994.02.17
申请号 US1993007270 申请日期 1993.08.03
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