Concrete building block

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Description

3. Concrete building block

3.1 : Perspective

3.2 : Front

3.3 : Back

3.4 : Top

3.5 : Bottom

3.6 : Right

3.7 : Left

3.8 : Cross sectional

The broken lines shown in FIGS. 3.1-3.8 illustrate portions of the concrete building block that form no part of the claimed design.

Claims

The ornamental design for a concrete building block, as shown and described.

Referenced Cited
U.S. Patent Documents
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2498276 February 1950 Kany
D225846 January 1973 Cruzen
3855752 December 1974 Aylon
D245999 October 4, 1977 Strigle, Jr.
4094380 June 13, 1978 Kobayashi
4473985 October 2, 1984 Hunt
5048250 September 17, 1991 Elias
5729943 March 24, 1998 Cambiuzzi
D409313 May 4, 1999 Behunin
D542405 May 8, 2007 Esjunin
D633630 March 1, 2011 Jacot
D655021 February 28, 2012 Oetlinger
D893053 August 11, 2020 Bott
D902444 November 17, 2020 Suga
D915627 April 6, 2021 Phan
D945643 March 8, 2022 Suga
20150218805 August 6, 2015 Jensen
20200032513 January 30, 2020 Devito
Foreign Patent Documents
RGN_306013840 August 2020 GB
Patent History
Patent number: D953580
Type: Grant
Filed: Apr 23, 2020
Date of Patent: May 31, 2022
Inventor: Masaaki Suga (Shiraoka)
Primary Examiner: Richard Kearney
Application Number: 35/510,618
Classifications
Current U.S. Class: Symmetrical (D25/115)