4. H - Electricity
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John Lawrence

H - Electricity – 01 – L

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Bi-directional solid state device

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Calibration systems

G - Physics – 01 – N
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Cut nail machine

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Patent

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Device for stopping leakage in hose and other pipes

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Isolation of semiconductor devices

H - Electricity – 01 – L
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Cut nail machine

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Patent

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Device for stopping leakage in hose and other pipes

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Patent

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Merchandise hook

A - Human Necessities – 47 – B
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Profile ID: LFCA-PAI-P-262724

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