Appeal No. 2001-1074 Page 11 Application No. 08/989,056 ordinary skill in the art to use the four port system of Engelder with the mask of Galleher. However, in the rejection before us in this appeal, the examiner has not presented any evidence establishing that it would have been obvious at the time the invention was made to a person of ordinary skill in the art to supply four friction engaging port caps instead of the two friction engaging port caps taught by Engelder. In that regard, there is no evidence that it would have been obvious to close each of Engelder's ports provided by nipples 33 and 34 with a friction engaging port cap especially since the ports provided by Engelder's nipples 33 and 34 are open when the mask is in use. For the reasons set forth above, the combined teachings of Galleher and Engelder are insufficient to establish the obviousness of the subject matter of claim 1. We have also reviewed the references additionally applied in the rejections of claims 4 to 6, 8 and 9 (i.e., Niemeyer, Schnoor and Nutter) but find nothing therein which makes up for the deficiencies of Galleher and Engelder discussed above. Accordingly, thePage: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007