| Patents for Covel Mfg. Co. |
Patents 1 -
15
of 31
      |
| Number | Date | Patentee | Title | Type |
| 319,794 | Jun. 09, 1885 | M. Covel | Saw sharpening machine | saw sharpening machines |
| 574,855 | Jan. 05, 1897 | H.P. Schofield | Saw-sharpening machine | saw sharpening machines |
| 615,152 | Nov. 29, 1898 | L.L. Filstrup | Saw-sharpening machine | saw sharpening machines |
| RE11,733 | Apr. 11, 1899 | L.L. Filstrup | Saw-sharpening machine | saw sharpening machines |
| 628,655 | Jul. 11, 1899 | L.L. Filstrup | Saw-sharpening machine | saw sharpening machines |
| 654,829 | Jul. 31, 1900 | L.L. Filstrup | Saw-sharpening machine | saw sharpening machines |
| 654,843 | Jul. 31, 1900 | H.P. Schofield | Saw support and guide | saw sharpening machines |
| 654,844 | Jul. 31, 1900 | H.P. Schofield | Saw-sharpening machine | saw sharpening machines |
| 654,845 | Jul. 31, 1900 | H.P. Schofield | Saw-support | saw sharpening machines |
| 667,924 | Feb. 12, 1901 | H.P. Schofield, L.L. Filstrup | Saw-sharpening machine | saw sharpening machines |
| 669,251 | Mar. 05, 1901 | L.L. Filstrup, H.P. Schofield | Saw-sharpening machine | saw sharpening machines |
| 691,488 | Jan. 21, 1902 | C. Ridderhof | Friction-clutch for counter-shafts | friction clutches |
| 697,584 | Apr. 15, 1902 | H.P. White | Drill-grinding machine | drill grinders |
| 702,885 | Jun. 17, 1902 | C. Ridderhof | Drill-grinding machine | drill grinders |
| 743,033 | Nov. 03, 1903 | C. Ridderhof | Drill-grinding machine | drill grinders |
