A one-piece molded closure of plastic which threads onto a container with a fairly specific exterior configuration and provides a combination such that when the closure is unthreaded, a tamper-indicating ring becomes separated from the lower end of the closure skirt. The indicating ring or band is joined...http://www.google.com/patents/US4613052?utm_source=gb-gplus-sharePatent US4613052 - Tamper-indicating closure, container and combination thereof
