William C. Meisenhelder

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Downers Grove, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Polystyrene phonograph record injection molding compositions of imp...
- Patent number 4,176,104
- Issue date Nov 27, 1979
- The Richardson Company
- Henry Alsberg
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Phonographic record molding composition
- Patent number 4,088,617
- Issue date May 9, 1978
- The Richardson Company
- Dale Skalla
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...