| 申请人 |
NATIONAL RESEARCH DEVELOPMENT CORP., LONDON, GB |
发明人 |
ALBERY, WYNDHAM JOHN, LONDON W2 3AF, GB;COOMBS, ANTHONY JOHN MARTIN, WEST WIMBLEDON LONDON SW20 OPQ, GB;DRUMMOND, HUMPHREY JOHN JARDINE, PERTH PH2 7SW, SCHOTLAND, GB;HAHN, CLIVE, RADLEY OXON OX14 3AJ, GB |
