| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Herman M. Gasstrom | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,847,757 | Mar. 01, 1932 | H.M. Gasstrom | Folding Rule Hinge | folding rule joints | |
| 1,965,230 | Jul. 03, 1934 | H.M. Gasstrom | Hinge Joint for Folding Rules | folding rule joints | |