James L. Clark

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Whitefish Bay, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Plastic container and closure collar combination and method
- Patent number 4,028,156
- Issue date Jun 7, 1977
- Plastronics, Inc.
- James L. Clark
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Anti-reflux valve
- Patent number 3,968,925
- Issue date Jul 13, 1976
- Plastronics, Inc.
- Ray H. Johnston
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Method and apparatus for butt-welding tubular plastic members to ea...
- Patent number 3,959,058
- Issue date May 25, 1976
- Plastronics, Inc.
- Lucien M. Rath
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL