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			 The ornamental design for a ball valve, as shown and described.  | 
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FIG. 1 is a top perspective view of a ball valve showing my new design;
FIG. 2 is a bottom view of the ball valve of FIG. 1;
FIG. 3 is a front view of the ball valve of FIG. 1;
FIG. 4 is a top view of the ball valve of FIG. 1;
FIG. 5 is a rear view of the ball valve of FIG. 1;
FIG. 6 is a left view of the ball valve of FIG. 1; and,
FIG. 7 is a right view of the ball valve of FIG. 1.
| Patent | Priority | Assignee | Title | 
| D455474, | Sep 12 2000 | Georg Fischer Rohrleitungssysteme AG | Ball valve | 
| D471963, | Apr 02 2002 | R & T Co., Ltd. | Valve | 
| D522618, | Oct 15 2002 | Asahi Organic Chemicals Industry Co., Ltd. | Ball valve | 
| D602565, | Dec 03 2008 | Parker-Hannifin Corporation | Ball valve | 
| D602566, | Dec 03 2008 | Parker-Hannifin Corporation | Hammer union ball valve | 
| D603017, | Dec 03 2008 | Parker-Hannifin Corporation | Hammer union ball valve | 
| D616068, | Jul 07 2008 | Hansen Developments Limited | Valve | 
| D721786, | Jul 26 2012 | F I P FORMATURA INIEZIONE POLIMERI S P A | Valve | 
| D723660, | Sep 26 2013 | SMC Corporation | Valve | 
| D734431, | Jul 25 2014 | Champ-Air Refrigeration Hardware Co., Ltd. | Tube expander | 
| D817454, | Jan 28 2016 | ASAHI YUKIZAI CORPORATION | Ball valve | 
| Patent | Priority | Assignee | Title | 
| 4023773, | Jan 28 1976 | Georg Fischer Aktiengesellschaft | True union ball valve | 
| 4667928, | May 13 1985 | Georg Fischer Aktiengesellschaft | Shut-off valve with spherical plug | 
| D291230, | Apr 11 1984 | Georg Fischer Atkiengesellschaft | Valve | 
| D297254, | Jan 29 1985 | Sekisui Kagaku Kogyo K.K. | Ball valve | 
| D321928, | Feb 28 1989 | Universal Valve Company, Inc. | Combination ball valve and check valve | 
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Apr 18 1994 | Georg Fischer Rohrleitungssysteme AG | (assignment on the face of the patent) | / | |||
| Apr 19 1994 | GREGOR, NAEF | Georg Fischer Rohrleitungssysteme AG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007002 | /0099 | 
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