| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents Granted on 1952-05-20 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 2,597,057 | May 20, 1952 | T.W. Bergquist | Safety valve | steam safety valves | |
| 2,597,489 | May 20, 1952 | D.B. Huntting | Body for a Chuck Having Radially Movable Jaws | metal lathe chucks | |