4. H - Electricity
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Hans Friedrich

H - Electricity – 01 – L

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Pressure screening apparatus for screening a paper stock...

D - Textiles – Paper – 21 – D
Patent

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Pressurized screen for screening a fibrous suspension

D - Textiles – Paper – 21 – D
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Semiconductor wafer alignment marks for use with electron beams

H - Electricity – 01 – L
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Profile ID: LFCA-PAI-P-133939

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