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US4968419A
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Document processing system
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EP0037100A1
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Method and apparatus for opening envelopes
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US4373848A
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Method and apparatus for exposing contents of an opened envelope with gravity assist
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US4354789A
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Method and apparatus for transferring envelopes
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US4343392A
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Method and apparatus for feeding envelopes
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US4356684A
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Batch method and apparatus for heating envelope edges to separate the envelope panels
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US4356683A
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Method and apparatus for holding and conveying a batch of envelopes to facilitate the opening of the envelopes
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US4356679A
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Apparatus for applying a degrading chemical to envelopes
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US4228634A
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Envelope opening process and composition
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US4222216A
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Opening of envelope with darkened edges
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US4235431A
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Method and apparatus for transporting documents with preselected interdocument spacing
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US4194342A
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Folded paper edge opening process
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US4090690A
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Staple removing method
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US4015523A
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Method and apparatus for feeding and printing documents
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US3728020A
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Apparatus and method of copying on a plurality of diverse copy media
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