Slot machines and other devices are arranged to interact with the...http://www.google.com.au/patents/US7267614?utm_source=gb-gplus-sharePatent US7267614 - Gaming token having a variable valueAdvanced Patent SearchPublication numberUS7267614 B1Publication typeGrantApplication numberUS 09/597,801Publication date11 Sep 2007Filing date20 Jun 2000Priority date10 May 2000Fee statusPaidAlso published asU