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| US4020615 | 15 Dic 1975 | 3 May 1977 | Pitney-Bowes, Inc. | Envelope inserter and feeder system |
| US4202153 | 25 Oct 1977 | 13 May 1980 | Automated Packaging Systems, Inc. | Method and apparatus for loading containers horizontally |
| US4286422 | 26 Dic 1979 | 1 Sep 1981 | W. R. Grace & Co., Cryovac Division | Walking beam bag loader |
| US4393640 | 28 Ago 1980 | 19 Jul 1983 | Hazelwood Enterprises Limited | Method and apparatus for handling and filling bags or envelopes |
| US4464880 | 1 Feb 1983 | 14 Ago 1984 | E. C. H. Will (GmbH & Co.) | Method and apparatus for introducing stacks of sheets into prefabricated cartons or the like |
| US4567715 | 17 Dic 1982 | 4 Feb 1986 | Kureha Kagaku Kogyo Kabushiki Kaisha | Packing device |
