Number | Name | Date | Kind |
---|---|---|---|
220429 | Russell | Oct 1879 | |
435604 | Hasselman | Sep 1890 | |
438797 | Blair | Oct 1890 | |
469017 | Hodsdon | Feb 1892 | |
574519 | Boughton | Jan 1897 | |
1045854 | Kevitt et al. | Dec 1912 | |
1449780 | Reinhold | Mar 1923 | |
1828642 | Bunker | Oct 1931 | |
1917629 | Anderson | Jul 1933 | |
2820256 | Dahl | Jan 1958 | |
2837777 | White | Jun 1958 | |
3733759 | Schulte et al. | May 1973 | |
4037385 | Wahlquist | Jul 1977 | |
4380836 | Braxton | Apr 1983 | |
4467572 | Somers et al. | Aug 1984 | |
5630302 | Roseband | May 1997 |
Number | Date | Country |
---|---|---|
77850 | Aug 1949 | CZ |
2090404 | Jan 1972 | FR |
640518 | Jul 1950 | GB |
638425 | Apr 1962 | IT |
2-272126 | Nov 1990 | JP |
Entry |
---|
International Search Report dated Nov. 11, 1999, PCT Appl. No. PCT/US99/17180. |