Patent Grant
D318582
| Number | Name | Date | Kind |
|---|---|---|---|
| D103073 | Morgan | Feb 1937 | |
| D141290 | Meyerhoefer | May 1945 | |
| D199847 | Ulrich | Dec 1964 | |
| D240184 | Neusghaefer | Jun 1976 | |
| D244111 | Friedman | Apr 1977 | |
| D258032 | Tebbe et al. | Jan 1981 | |
| D284243 | Barber | Jun 1986 | |
| D305708 | Newhouse | Jan 1990 | |
| D308775 | Diekman | Jun 1990 | |
| 3067882 | Ribbens et al. | Dec 1962 | |
| 3112912 | Alvarez | Dec 1963 | |
| 3542446 | Joyce | Nov 1970 | |
| 3791528 | Brendgord | Feb 1974 | |
| 4008872 | Thompson | Feb 1977 | |
| 4034864 | Tyson et al. | Jul 1977 | |
| 4174486 | Winkler | Nov 1979 | |
| 4274687 | Bayles et al. | Jun 1981 | |
| 4415091 | Wolff | Nov 1983 | |
| 4457436 | Kelley | Jul 1984 | |
| 4571907 | DeFouw et al. | Feb 1986 | |
| 4605988 | Nienhuis et al. | Aug 1986 | |
| 4618192 | Kelley | Oct 1986 | |
| 4632473 | Smith | Dec 1986 | |
| 4685255 | Kelley | Aug 1987 |
