Number | Name | Date | Kind |
---|---|---|---|
2324473 | Allinson | Jul 1943 | |
2615819 | Manzer | Oct 1952 | |
2743288 | Rueggeberg et al. | Apr 1956 | |
3412056 | Crawford et al. | Nov 1968 | |
3451958 | Riedeman et al. | Jun 1969 | |
3753968 | Ward | Aug 1973 | |
3899476 | Ward | Aug 1975 | |
4017474 | Glasser et al. | Apr 1977 | |
4018730 | McDonald | Apr 1977 | |
4081462 | Powers et al. | Mar 1978 | |
4462840 | Schilling et al. | Jul 1984 | |
4478642 | Schilling et al. | Oct 1984 | |
4547224 | Schilling | Oct 1985 | |
4657595 | Russell | Apr 1987 | |
4676927 | Schilling et al. | Jun 1987 | |
4859245 | Schilling et al. | Aug 1989 | |
4990591 | Schilling | Feb 1991 | |
5266682 | Uhrig et al. | Nov 1993 | |
5336438 | Schilling et al. | Aug 1994 |
Number | Date | Country |
---|---|---|
1032363 | Jun 1966 | GBX |
1278421 | Jun 1972 | GBX |
Entry |
---|
Abraham: Asphalts and Allied Substances, 5th Edition, vol. 1, Raw Materials and Manufactured Products, D. Van Nostrand Co, Inc., New York (1945), pp.552 -554 & 558-564. |