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John C. Drenter
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Davenport, IA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Blasting media apparatus
Patent number
6,152,810
Issue date
Nov 28, 2000
PCT, Inc.
John C. Drenter
B24 - GRINDING POLISHING
Information
Patent Grant
Abrasive grit material recovery system
Patent number
5,657,876
Issue date
Aug 19, 1997
PCT, Inc.
John Charles Drenter
B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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Patent Grant
Abrasive grit material recovery system
Patent number
5,622,265
Issue date
Apr 22, 1997
PCT, Inc.
John C. Drenter
B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information
Patent Grant
Abrasive grit material recovery system
Patent number
5,520,288
Issue date
May 28, 1996
PCT, Inc.
John C. Drenter
B07 - SEPARATING SOLIDS FROM SOLIDS SORTING