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          <link:definition>999011 - Disclosure - NOTE 5 &#8212; Bank Financing Arrangements</link:definition>
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          <link:definition>999013 - Disclosure - Summary of Investment Holdings</link:definition>
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          <link:definition>999014 - Disclosure - NOTE 7 &#8212; Segment Information and Concentrations</link:definition>
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          <link:definition>999016 - Disclosure - NOTE 9 &#8212; Net Loss Per Share</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999017 - Disclosure - NOTE 10 &#8212; Income Taxes</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999018 - Disclosure - NOTE 11 &#8212; Commitments and Contingencies</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999019 - Disclosure - NOTE 12 &#8212; Subsequent Events</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999020 - Disclosure - NOTE 2 &#8212; Summary of Significant Accounting Policies (Policies)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999023 - Disclosure - NOTE 3 &#8212; Intangible Assets (Tables)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999024 - Disclosure - NOTE 4 &#8212; Inventories (Tables)</link:definition>
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          <link:definition>999025 - Disclosure - NOTE 6 &#8212; Secured Subordinated Convertible Notes Payable (Tables)</link:definition>
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          <link:definition>999027 - Disclosure - NOTE 9 &#8212; Net Loss Per Share (Tables)</link:definition>
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          <link:definition>999029 - Disclosure - NOTE 2 &#8212; Summary of Significant Accounting Policies (Details Narrative)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999030 - Disclosure - Estimated future amortization of intangible assets (Details)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:usedOn>link:calculationLink</link:usedOn>
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</schema>
