| 2445787 | Method of and apparatus for plotting an ordered set of quantities | 1948-07-27 | ||
| 2229721 | Camera for recording eye movements | 1941-01-28 | ||
| 2184131 | Means and method of treating eyes | 1939-12-19 | ||
| 2132520 | Means and method of recording eye movements | 1938-10-11 |