Number | Name | Date | Kind |
---|---|---|---|
2881676 | Thomas | Apr 1959 | |
2928466 | Burkhard et al. | Mar 1960 | |
2991218 | McCirrito et al. | Jul 1961 | |
2995186 | Montigny | Aug 1961 | |
3052296 | Justus | Sep 1962 | |
3066068 | Calehuff et al. | Nov 1962 | |
3149026 | Hornbostel | Sep 1964 | |
3311533 | Montigny et al. | Mar 1967 | |
3438854 | Means | Apr 1969 | |
3874998 | Johnson | Apr 1975 | |
3981768 | Lehtinen | Jul 1976 | |
4140573 | Johnson | Feb 1979 | |
4154645 | Kankaanpaa | May 1979 | |
4235667 | Bergstrom et al. | Nov 1980 | |
4306934 | Seppanen | Dec 1987 | |
4734164 | Irwin et al. | Mar 1988 | |
4802954 | Malashenko | Feb 1989 |
Number | Date | Country |
---|---|---|
687466 | Mar 1967 | BEX |
Entry |
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The Formation and Structure of Paper; Technical Section of the British Paper and Board Makers' Association (Inc.), Plough Place, Fetter Lane, London, E.C.4, 1962, vol. 2, P. E. Wrist. |