| http://www.w3.org/ns/prov#value | - e heavier item to be shipped. [0008] U.S. Pat. Nos. 5,065,000 (???'000???), 4,923,022 (???'022???), and 5,025,386 (???'386???) to Pusic are also directed to automated mail systems designed to process and store items, in particular letters.
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