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DEVTECH LABS
US4 patents
Top patents by PatentIndex Score
US5221507AJun 22, 1993
Process for coinjection molding of preforms for multi-layer containers
DEVTECH LABS70 citations90
US5040963AAug 20, 1991
Apparatus for coinjection molding of preforms for multi-layer containers
DEVTECH LABS55 citations90
US4952268AAug 28, 1990
Laminated waterproofing material containing asphalt and method of making it
DEVTECH LABS36 citations86
US5118407AJun 2, 1992
Electrostatic separation of plastic materials
DEVTECH LABS17 citations68