U.S. patent number D810,174 [Application Number D/577,836] was granted by the patent office on 2018-02-13 for step-up ring. This patent grant is currently assigned to Breakthrough Photography, LLC. The grantee listed for this patent is Graham Clark. Invention is credited to Graham Clark.
United States Patent | D810,174 |
Clark | February 13, 2018 |
Inventors: | Clark; Graham (Clark, CO) | ||||||||||
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Applicant: |
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Assignee: | Breakthrough Photography, LLC
(Clark, CO) |
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Appl. No.: | D/577,836 | ||||||||||
Filed: | September 15, 2016 |
Current U.S. Class: | D16/219 |
Current International Class: | 1605 |
Field of Search: | ;D16/200-220,232,235,239,242,243,244,245,250 ;D14/423,229,251 ;D18/107 |
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Step-Up Ring, date unknown [online], [site visited Sep. 29, 2017], Available from Internet, URL: <https://breakthrough.photography/collections/all/products/step-up-rin- g>. cited by examiner . Heliopan 60-55mm Step-Down Ring (#436), announced 2017 [online], [site visited Sep. 29, 2017], Available from Internet, URL: <https://www.bhphotovideo.com/c/product/160356-REG/Heliopan.sub.--7004- 36.sub.--700436.sub.--Step.sub.--Down.sub.--Ring.html>. cited by examiner . "Zomei 10-stop Neutral Density Filter Review" (bottom photo, p. 7 in PDF), posted at vasphotography.wordpress.com, Aug. 25, 2015. Available from Internet: <https://vasphotography.wordpress.com>. cited by applicant . "Kiwifotos LA-58SX30 Lens Adapter Ring for Canon PowerShot SX1 IS, SX10 IS, SX20 IS, SX30 IS and SX40 HS" (p. 2 in PDF), posted at cowboystudio.com, Apr. 16, 2015. Available from Internet:<http://www.cowboystudio.com/product.sub.--p/la-58sx30-lens-a- dapter-ring.htm>. cited by applicant . "Review: Cokin Pure-Harmonie NO-X Filter" (p. 2 & 3 in PDF), posted at thephoblographer.com, Aug. 21, 2013. Available from Internet: <http://www.thephoblographer.com/2013/08/21/review-cokin-pure-harmonie- -nd-x- filter>. cited by applicant. |
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