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John H. Burk
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Pleasant Hill, CA, US
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last 30 patents
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Patent Grant
Replacement wear pins and replaceable impeller assembly for impact...
Patent number
4,390,136
Issue date
Jun 28, 1983
John H. Burk
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Grant
Rock crusher breaker blocks and adjustment apparatus
Patent number
4,389,022
Issue date
Jun 21, 1983
John H. Burk
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Grant
Impact crusher
Patent number
4,126,280
Issue date
Nov 21, 1978
Black Clawson, Inc.
John H. Burk
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...