ADE CORP
AMENDMENTS TO EMPLOYEE STOCK PURCHASE PLAN
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<DESCRIPTION>AMENDMENTS TO EMPLOYEE STOCK PURCHASE PLAN
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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT FACE="Times New Roman" SIZE="2"><B>Exhibit 10.1 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><U>Amendments to Employee Stock Purchase Plan</U> </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"
ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">(Effective September 1, 2003) </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman"
SIZE="2">Sections 2.03 and 3.01 of the ADE Corporation Employee Stock Purchase Plan have been amended to read in their entirety as follows: </FONT></P> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
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<TD WIDTH="5%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">2.03</FONT></TD>
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<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Employee. &#147;Employee&#148; means any person who is customarily employed by the Company on a full-time regular or part-time regular basis by the Company and is regularly
scheduled to work more than 20 hours per week. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
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<TD WIDTH="5%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">3.01</FONT></TD>
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<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Initial Eligibility. Any Employee who shall be employed by the Company on the date his/her participation in the Plan is to become effective shall be eligible to participate in
Offerings under the Plan. </FONT></TD></TR></TABLE>
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