US Patent 6938768 Reusable lid with date indicating device

Reusable containers and lids with date indicating devices and methods for using the same disclosed, which allow the user to indicate one or more of the following: a date when the contents were stored, a date when the contents should be used, a time when the contents should be used, and a date by which the contents should be disposed. The date indicating device may include a plurality of resettable buttons, each of which may be located atop an individual platform. Both the buttons and the platforms may take on a variety of different shape.