The invention relates to a universal delivery and collection box unit (UDCBU). In one implementation, a UDCBU includes a mail compartment (110/120) accessible by one door (210) and a storage compartment (130) accessible by a second door (220). The mail compartment allows the postal service to deliver...http://www.google.com.tw/patents/US7337944?utm_source=gb-gplus-share專利 US7337944 - Universal delivery and collection box unit (UDCBU)
