File:WoodDrillPatent.png
Appearance
![File:WoodDrillPatent.png](http://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/WoodDrillPatent.png/400px-WoodDrillPatent.png)
Size of this preview: 400 × 600 pixels. Other resolutions: 160 × 240 pixels | 320 × 480 pixels | 512 × 768 pixels | 682 × 1,024 pixels | 1,856 × 2,784 pixels.
Original file (1,856 × 2,784 pixels, file size: 140 KB, MIME type: image/png)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 10:40, 15 November 2011 | ![]() | 1,856 × 2,784 (140 KB) | Materialscientist | {{Information |Description ={{en|1=The rock drill patented by De Volson Wood}} |Source =De Volson Wood "Rock-drill" US patent 319653 Issue date: Jun 9, 1885 |Author =De Volson Wood |Date =1885 |Permission = |other_versions |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):