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Raymond D. Mathews
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Round Rock, TX, US
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last 30 patents
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Patent Grant
Impact printer with dual helix character print elements
Patent number
4,345,846
Issue date
Aug 24, 1982
International Business Machines Corporation
Raymond D. Mathews
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Off-the-carrier ribbon feed and drive on a high speed movable-carri...
Patent number
4,264,224
Issue date
Apr 28, 1981
International Business Machines Corporation
Raymond D. Mathews
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS