File:Cameron_Ram-type_Blowout_Preventer_(1922).jpg
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Summary
DescriptionCameron Ram-type Blowout Preventer (1922).jpg |
English: Cameron Ram-type Blowout Preventer (1922)
U.S. Patent 1,569,247. Text was removed from figure and minor cleanup of the scan was done with Microsoft Paint. |
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Date | ||||
Source | US Patent n° 1,569,247 | |||
Author | James S. Ambercrombie and Harry S. Cameron | |||
Permission (Reusing this file) |
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Licensing
Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Cameron_Ram-type_Blowout_Preventer_(1922).jpg |
Items portrayed in this file
depicts
1922
image/jpeg
60770e01fcb8f7c198a35614af630b4abe7e179f
702,066 byte
1,493 pixel
2,026 pixel
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:09, 20 December 2011 | 2,026 × 1,493 (686 KB) | Jbarta | clean up | |
20:11, 9 May 2010 | 2,026 × 1,493 (323 KB) | KudzuVine | {{Information |Description={{en|1=Cameron Ram-type Blowout Preventer (1922) U.S. Patent 1,569,247. Text was removed from figure and minor cleanup of the scan was done with Microsoft Paint {{PD patents}}}} |Source=http://patimg1.uspto.gov/.piw?Docid=015692 |
File usage
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