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A B Lasers, Inc. Patents
A B Lasers, Inc.
Acton, MA
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Patent Number Title Of Patent Date Issued
5329090 Writing on silicon wafers July 12, 1994
Surfaces of silicon wafers used in making computer chips are marked by dimples engraved by pulses of radiation from a Nd:YAG or Nd:YLF laser pumped by diode lasers (commonly called a DPY laser). A beam of radiation from the DPY laser is focused on and moved across the surface of a wafer

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