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Henri G. W. Pierson

DCDc Co.: 1 patents #1 of 1Top 100%
Wellingborough, GB: #1 of 4 inventorsTop 25%
Overall (1989): #106,346 of 140,708Top 80%
1 Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4857194 Intermittent vacuum filter apparatus incorporating a double valve arrangement — 1989-08-15

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Hermann Plainer1
Heidi Piper1
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Herbert E. Pietsch1
Henry Pierik1
Henri Piera1
Henner Pieper1
Heinz A. Pieniak1