| Number | Name | Date | Kind |
|---|---|---|---|
| 757403 | Leveen | Apr 1904 | |
| 1569706 | Bulwinkle | Jan 1926 | |
| 1645870 | Overton et al. | Oct 1927 | |
| 1816974 | Kavanagh | Aug 1931 | |
| 1837447 | Kenny | Dec 1931 | |
| 2543008 | French | Feb 1951 | |
| 3947985 | Skrzypczak | Apr 1976 | |
| 4534743 | D'Onofrio et al. | Aug 1985 | |
| 4751615 | Abrams | Jun 1988 | |
| 4827645 | Stamps, Jr. | May 1989 | |
| 5019748 | Appelberg | May 1991 | |
| 5045755 | Appelberg | Sep 1991 |
| Entry |
|---|
| E-Lite, Technology Website (Tab A), no publication date given. |