专利名称：Apparatus and method for the production
of grooves or ribs in or on a surface
发明人：Lloyd, Mark Llewellyn, Sowerby Research
Centre
申请号：EP90311156.5申请日：19901011公开号：EP0425137B1公开日：19930915
摘要：A mask (1) for the production of grooves or ribs in or on a surface is made ofsheet material and has at least two rows (2, 3) of parallel sided apertures (4, 4a)therethrough. The apertures (4) of row (2) are in laterally spaced apart side by siderelationship. The apertures (4a) of the second row (3) are also in laterally spaced side byside relationship but staggered relative to the apertures (4) to leave a reinforcing web (7)between adjoining first and second row apertures (4 and 4a).
申请人：BRITISH AEROSPACE PUBLIC LIMITED COMPANY
地址：WARWICK HOUSE, P.O. BOX 87, FARNBOROUGH AEROSPACE CENTRE;FARNBOROUGH, HANTS. GU14 6YU
代理机构：Rooney, Paul Blaise
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容