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last 30 patents
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Patent Grant
Method and apparatus of identifying ink stored in an ink-jet cartridge
Patent number
6,322,182
Issue date
Nov 27, 2001
WiserTek International Corp.
Chen-Hua Lin
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Patent Grant
Ink-jet cartridge
Patent number
6,145,973
Issue date
Nov 14, 2000
WiserTek International Corp.
Ji-Chen Wu
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS