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Paul Hamilton
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Levittown, PA, US
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last 30 patents
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Patent Grant
Continuous seal vehicular exhaust distribution system for building
Patent number
5,655,962
Issue date
Aug 12, 1997
Exhaust Track, Inc.
Edward A. Pfeiffer
B08 - CLEANING
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Patent Grant
Vehicle exhaust distribution system for buildings
Patent number
5,362,273
Issue date
Nov 8, 1994
Exhaust Track, Inc.
Edward A. Pfeiffer
B08 - CLEANING
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Patent Grant
Exhaust distribution system
Patent number
5,092,228
Issue date
Mar 3, 1992
Edward A. Pfeiffer
B08 - CLEANING