 
                 Patent Grant
 Patent Grant
                     5172529
 5172529
                    | Number | Name | Date | Kind | 
|---|---|---|---|
| 1953562 | Lansing | Apr 1934 | |
| 2568686 | Peter | Sep 1951 | |
| 3166285 | Downes | Jan 1965 | |
| 3604154 | Curran | Sep 1971 | |
| 4161850 | Peterson et al. | Jul 1979 | |
| 4372629 | Propst et al. | Feb 1983 | |
| 4437839 | Stempel | Mar 1984 | |
| 4535577 | Tenser et al. | Aug 1985 | |
| 4685255 | Kelley | Aug 1987 | |
| 4731960 | Sease | Mar 1988 | |
| 4762072 | Boundey et al. | Aug 1988 | |
| 4876835 | Kelley et al. | Oct 1989 | |
| 4899510 | Propst | Feb 1990 | 
| Number | Date | Country | 
|---|---|---|
| 199814 | Mar 1958 | ATX | 
| 120785 | Feb 1948 | SEX | 
| Entry | 
|---|
| Teknion Catalog: Modular Power Panels, p. 8, 1983 publication. |