Assignee

CLARK CARL A

2 granted patents·44 citations·filing 1979–1984

Technology mixA45D1 E21D1 F16B1

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2 records

0184US4662795AMethod of supporting a mine roof using nut element with breakable portionCLARK CARL A·Filed 1984·Granted May 5, 1987·34 cites·4 claims
0237US4269205AThumb hair gaugeCLARK CARL A·Filed 1979·Granted May 26, 1981·10 cites·7 claims

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