Number | Name | Date | Kind |
---|---|---|---|
2531427 | Hauser | Nov 1950 | |
2885360 | Haden, Jr. et al. | May 1959 | |
3253791 | Cohn et al. | May 1966 | |
3993500 | Isaac et al. | Nov 1976 | |
4018673 | Hughes et al. | Apr 1977 | |
4042412 | Williams | Aug 1977 | |
4451440 | Thompson, III | May 1984 | |
4483934 | Goodman et al. | Nov 1984 | |
4695402 | Finlayson et al. | Sep 1987 | |
4888315 | Bowman et al. | Dec 1989 | |
5011534 | Berube et al. | Apr 1991 | |
5137574 | Suitch et al. | Aug 1992 | |
5266538 | Knudson et al. | Nov 1993 | |
5371051 | Pope et al. | Dec 1994 | |
5391228 | Carroll | Feb 1995 | |
5407480 | Payton et al. | Apr 1995 |
Number | Date | Country |
---|---|---|
283300 | Sep 1988 | EPX |
Entry |
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Technical Bulletin: Abrasion Tester Model AT 1000, pp. 1-11**no date. |
"Testing Fillers And Pigments For Paper, Cardboard and Pulpboard", Specification Sheet V/27.5/75, pp. 1-6, Oct. 23, 1975. |