Page:USpatent3356858.djvu/3

 {|width="100%" cellspacing=5 cellpadding="5" border="0"
 * width="33%" align="left" valign="top" | Dec. 5, 1967
 * width="33%" align="center" valign="top" | F.M. Wanlass
 * width="33%" align="right" valign="top"|3,356,858
 * }