申请人 |
BOARD OF CONTROL OF MICHIGAN TECHNOLOGICAL UNIVERSITY, HOUGHTON, MICH., US |
发明人 |
SANDBERG, L. BOGUE, CHASSEL MICHIGAN 49916, US;PALARDY, ROBERT D., HOUGHTON MICHIGAN 49931, US;HAATAJA, BRUCE A., LAKE LINDEN MICHIGAN 49945, US;STORY, FRANK H., DOLLAR BAY MICHIGAN 49922, US;JURMU, DOUGLAS C., LAURIUM MICHIGAN 49913, US;YATES, WILLIAM A., CALUMET MICHIGAN 49913, US |