| Patents for Frederick S. Haas |
Patents 1 -
10
of 51
      |
| Picture | Number | Date | Patentee | Title |
| | 1,850,392 | Mar. 22, 1932 | F.S. Haas | Machine tool |
| | 1,862,851 | Jun. 14, 1932 | F.S. Haas | Grinding Machinery |
| | 1,877,505 | Sep. 13, 1932 | B.A. Kearns, F.S. Haas | Grinding Machine |
| | 1,891,662 | Dec. 20, 1932 | F.S. Haas, C. Booth | Machine Tool |
| | 1,905,224 | Apr. 25, 1933 | C. Booth, F.S. Haas | Grinding Machinery |
| | 1,938,757 | Dec. 12, 1933 | F.S. Haas, S. Einstein | Grinding Machine |
| | 1,938,762 | Dec. 12, 1933 | F.S. Haas | Grinding Machine |
| | 1,938,763 | Dec. 12, 1933 | F.S. Haas | Grinding Machinery |
| | 1,938,764 | Dec. 12, 1933 | H. Fritschi, F.S. Haas | Grinding Machine |
| | 1,938,765 | Dec. 12, 1933 | F.S. Haas | Grinding Machine |
