This application is a reissue divisional application of U.S. Design application Ser. No. 29/620,772, now U.S. Design Pat. No. RE46,940, which issued on Jun. 20, 2018 and is a reissue of U.S. Design Pat. No. D760,201, which issued on Jun. 28, 2016 from U.S. Design application Ser. No. 29/518,227, filed on Feb. 20, 2015, the contents of which applications are entirely incorporated by reference herein.
The broken lines showing in FIGS. 1-5 and 71-7 are for illustrative purposes only and form no part of the claimed design.
The grid of circular apertures schematically depicted in FIGS. 1-61-2, and 6 is continuous throughout the surfaces on which the apertures are shown.