Harold Chen

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Card reader apparatus
- Patent number 5,256,867
- Issue date Oct 26, 1993
- Verifone, Inc.
- Harold Chen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Card reader apparatus with replaceable card guide
- Patent number 5,180,905
- Issue date Jan 19, 1993
- Verifone Inc.
- Harold Chen
- G06 - COMPUTING CALCULATING COUNTING