Number | Name | Date | Kind |
---|---|---|---|
1947269 | Leibing | Feb 1934 | |
2683232 | Weissheimer | Sep 1950 | |
2853637 | Ishikawa | Sep 1958 | |
2885645 | Wennerberg | May 1951 | |
3315106 | Reynst | Mar 1964 | |
3348086 | Monma | Nov 1964 | |
3845338 | Fawzy | Oct 1974 | |
4152614 | Noguchi et al. | May 1979 | |
4243902 | Ban et al. | Jan 1981 | |
4379257 | Hore | Apr 1983 |
Number | Date | Country |
---|---|---|
140109 | Oct 1979 | JPX |
115166 | Oct 1981 | JPX |
Entry |
---|
Eshback et al., Handbook of Engineering Fundamentals, pp. 905-906. |