申请人 |
TETRONICS RESEARCH AND DEVELOPMENT CO. LTD., FARINGDON, OXFORDSHIRE, GB;MANVILLE CORP., DENVER, COL., US |
发明人 |
WILLIAMS, JOHN KENNETH, FARINGTON, SN7 8NJ, GB;CUSICK, MICHAEL JOHN, DENVER COUNTY, COLORADO 80224, US;OLDS, LEONARD ELMO, CASTLE ROCK, COLORADO 80107, US |