The present invention discloses a beverage cup that comprises a cup body, and a lid. The lid comprises a hinged plug insert, which covers the drinking port in the lid, a window and a counter means. The counter means comprises a disc that protrudes through the outer circumference of the lid in such a...http://www.google.de/patents/US7581640?utm_source=gb-gplus-sharePatent US7581640 - Reusable beverage cup with counter
