2779836 | Multiple switch speed controlled mechanism | 1957-01-29 | ||
2720563 | Variable control for speed actuated multiple switch mechanism | 1955-10-11 | ||
2695939 | Electric switching device | 1954-11-30 | ||
2671836 | Electromagnetic relay | 1954-03-09 | ||
2360128 | Snap-action device | 1944-10-10 | ||
2134448 | Electromagnetic relay | 1938-10-25 | ||
1004005 | N/A | 1911-09-26 |