Joseph Walter Couture

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Dorval, CA

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Patents Grantslast 30 patents

Information Patent Grant
Pulping apparatus including a rotor and helical screw flights exten...
- Patent number 4,535,943
- Issue date Aug 20, 1985
- The Black Clawson Company
- Joseph W. Couture
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Pulping apparatus for liquid slurry stock
- Patent number 4,109,872
- Issue date Aug 29, 1978
- The Black Clawson Company
- Joseph W. Couture
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for pulping waste paper materials
- Patent number 4,030,671
- Issue date Jun 21, 1977
- The Black Clawson Company
- Joseph Walter Couture
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE