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Electrothermal print head
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Patent number 4,130,752
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Issue date Dec 19, 1978
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Ing. C. Olivetti & C., S.p.A.
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Renato Conta
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Electrothermal print head
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Patent number 4,055,743
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Issue date Oct 25, 1977
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Ing. C. Olivetti & C., S.p.A.
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Renato Conta
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Electrothermal printing unit
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Patent number 3,989,131
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Issue date Nov 2, 1976
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Ing. C. Olivetti & C., S.p.A.
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Franco Knirsch
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Electrothermal print head
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Patent number 3,967,092
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Issue date Jun 29, 1976
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Ing. C. Olivetti & C., S.p.A.
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Renato Conta
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Electrothermal printing unit
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Patent number 3,951,247
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Issue date Apr 20, 1976
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Ing. C. Olivetti & C., S.p.A.
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Lucio Montanari
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS