| 2857922 | Apparatus for cleaning tube bundles | 1958-10-28 | ||
| 2811240 | Materials handling machines | 1957-10-29 | ||
| 2692565 | Pipe conveyer system | 1954-10-26 | ||
| 2633233 | Drawing machine | 1953-03-31 | ||
| 2448324 | Pipe handling apparatus | 1948-08-31 | ||
| 2279340 | Conveyer for coated pipe | 1942-04-14 | ||
| 2065752 | Food treating apparatus | 1936-12-29 | ||
| 1323575 | N/A | 1919-12-02 |