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William J. Black
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Wilmington, IL, US
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last 30 patents
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Patent Grant
Elevating scraper up-stop mechanism
Patent number
4,223,460
Issue date
Sep 23, 1980
Caterpillar Tractor Co.
William J. Black
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Elevating scraper up-stop mechanism
Patent number
4,159,583
Issue date
Jul 3, 1979
Caterpillar Tractor Co.
William J. Black
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Guard for hydraulic cylinder rods
Patent number
3,997,986
Issue date
Dec 21, 1976
Caterpillar Tractor Co.
William J. Black
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Bucket tooth adapter support and load transfer means
Patent number
3,974,579
Issue date
Aug 17, 1976
Caterpillar Tractor Co.
William J. Black
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING