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Paul Gerlach
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Ludwigsburg, DE
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last 30 patents
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Patent Grant
Dirt accumulation indicator for air intake filters
Patent number
4,688,511
Issue date
Aug 25, 1987
Filterwerk Mann & Hummel GmbH
Paul Gerlach
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS