Number | Name | Date | Kind |
---|---|---|---|
1977418 | Winkler | Oct 1934 | |
2026096 | Muhlbauer | Dec 1935 | |
2052365 | Stukart | Aug 1936 | |
2052367 | Folk | Aug 1936 | |
2598740 | Zimmermann | Jun 1952 | |
2665531 | Sivertsen | Jan 1954 | |
2728176 | Ritzert | Dec 1955 | |
4386483 | Schlaefli | Jun 1983 | |
4732056 | Foster | Mar 1988 | |
4811521 | Nakae et al. | Mar 1989 | |
5101704 | Jones et al. | Apr 1992 | |
5152105 | Belvederi | Oct 1992 | |
5591072 | Tweed et al. | Jan 1997 |
Number | Date | Country |
---|---|---|
630702 | Nov 1961 | CA |
1187170 | Jan 1959 | DE |
4113854 | Apr 1991 | DE |
4244180 | Dec 1992 | DE |
Entry |
---|
PCT International Search Report; Application No. US 99/31303 filed Dec. 30, 1999. |