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        <link:definition>101 - Document - Document and Entity Information</link:definition>
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        <link:definition>103 - Statement - Consolidated Balance Sheets</link:definition>
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        <link:definition>104 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
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        <link:definition>105 - Statement - Consolidated Statements of Income</link:definition>
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        <link:definition>107 - Statement - Consolidated Statements of Cash Flows (Parenthetical)</link:definition>
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        <link:definition>109 - Disclosure - Summary of Accounting Policies</link:definition>
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        <link:definition>110 - Disclosure - Earnings Per Share</link:definition>
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        <link:definition>111 - Disclosure - Costs and Estimated Earnings in Excess of Billings</link:definition>
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        <link:definition>112 - Disclosure - Inventories</link:definition>
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        <link:definition>113 - Disclosure - Marketable Securities</link:definition>
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        <link:definition>114 - Disclosure - Property, Plant and Equipment</link:definition>
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        <link:definition>115 - Disclosure - Short-Term Debt Obligations</link:definition>
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        <link:definition>117 - Disclosure - Investment in Morion, Inc.</link:definition>
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