Number | Name | Date | Kind |
---|---|---|---|
1494531 | Corcoran | May 1924 | |
1731996 | Appelbaum | Oct 1929 | |
1776134 | Scruby | Sep 1930 | |
1843547 | Dukes | Feb 1932 | |
2308818 | Levkoff | Jan 1943 | |
2389703 | Van Rosen | Nov 1945 | |
2675166 | Main | Apr 1954 | |
2811296 | Long | Oct 1957 | |
2883042 | Richer | Apr 1959 | |
3002672 | Kotowick | Oct 1961 | |
3999657 | Doskocil | Dec 1976 | |
4060169 | Hildebrand | Nov 1977 | |
4158406 | Feder | Jun 1979 | |
4318472 | Nauheimer | Mar 1982 | |
4342389 | Bethune | Aug 1982 | |
4416371 | Nauheimer | Nov 1983 | |
5857612 | Smith et al. | Jan 1999 |
Entry |
---|
U.S. patent No. 4,773,533 issued Sep. 27, 1988 to Greene. |