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Kenneth F. M. Friendship
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Clarendon Hills, IL, US
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last 30 patents
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Patent Grant
Ribbed preform for use in the blow molding of a plastic material co...
Patent number
4,977,005
Issue date
Dec 11, 1990
The Continental Group, Inc.
Suppayan M. Krishnakumar
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Mold core member for use in a mold unit for injection molding a pla...
Patent number
4,603,831
Issue date
Aug 5, 1986
The Continental Group, Inc.
Suppayan M. Krishnakumar
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Plastic cap with pressure seal
Patent number
4,531,650
Issue date
Jul 30, 1985
The Continental Group, Inc.
Kenneth F. M. Friendship
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Patent Grant
Plastic container with internal rib reinforced bottom
Patent number
4,525,401
Issue date
Jun 25, 1985
The Continental Group, Inc.
John F. E. Pocock
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL