US Patent: 702,885
|
| Drill-grinding machine
|
|
Patentee:
|
|
| Corneil Ridderhof (exact or similar names) - Grand Rapids, MI |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Jan. 23, 1902 |
| Granted: |
Jun. 17, 1902 |
USPTO (New site tip) Google Patents
Report data errors or omissions to steward
Jeff Joslin
|
|
Description: |
| Improved drill holder for the drill grinder of patent 643,703. |
|