Improvements in or relating to new and improved methods of producing electro-forms
摘要
申请公布号
GB619440(A)
申请公布日期
1949.03.09
申请号
GB19460036465
申请日期
1946.12.10
申请人
THE PRINTING AND ALLIED TRADES RESEARCH ASSOCIATION;WILLIAM HENRY BANKS;PATRICK BERNARD UPTON;THE RESEARCH ASSOCIATION OF BRITISH RUBBER MANUFACTURES;JOHN RICHARD SCOTT
