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Rotary printing machine
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Patent number 4,037,531
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Issue date Jul 26, 1977
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Gerhard Ritzerfeld
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Non-rotating handwheel
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Patent number 3,992,991
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Issue date Nov 23, 1976
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Addressograph-Multigraph Corporation
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Robert M. Koch
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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3601045
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Patent number 3,601,045
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Issue date Aug 24, 1971
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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2421823
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Patent number 2,421,823
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Issue date Jun 10, 1947
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS