Appeal No. 1999-0960 Application No. 08/785,437 backs of [sic: of the] accordion fold pack on the flow-off side along substantially an entire length of the fold backs so that the fold backs are sealingly joined to the protective mask along substantially their entire length. 3Page: Previous 1 2 3 4 5 6 7 8 9 10 11 NextLast modified: November 3, 2007