File:Original Shaffer Spherical BOP Patent1.jpg
Size of this preview: 426 × 599 pixels. Other resolutions: 171 × 240 pixels | 341 × 480 pixels | 546 × 768 pixels | 1,152 × 1,620 pixels.
Original file (1,152 × 1,620 pixels, file size: 305 KB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary edit
| Description |
English: Patent Drawing of the Original Spherical Blowout Preventer, by The Rucker Company (Shaffer),
U.S. Patent 3,667,721 (1972). |
| Date | Filed April 13, 1970 |
| Source | US Patent n° 3,667,721 |
| Author | Ado N. Vujasinovic |
Licensing edit
|
The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)
The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}. |
Original upload log edit
Transferred from en.wikipedia to Commons using For the Common Good.
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 17:58, 24 July 2010 | 1,152 × 1,620 (312,355 bytes) | w:en:Catsquisher (talk | contribs) | <!== {{int:filedesc}} == {{Information |Description={{en|1=Patent Drawing of the Original Spherical Blowout Preventer, by The Rucker Company (Shaffer), U.S. Patent 3,667,721 (1972).}} |Source=[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HIT |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:17, 30 September 2018 | | 1,152 × 1,620 (305 KB) | Arlene the bean (talk | contribs) | Transferred from en.wikipedia: see original upload log above |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
