File: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)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
| Description |
English: The rock drill patented by De Volson Wood |
| Date | |
| Source | De Volson Wood "Rock-drill" US patent 319653 Issue date: Jun 9, 1885 |
| Author | De Volson Wood |
|
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.  You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
|
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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):
