Appeal No. 1999-0316 Application 08/329,124 The invention relates to a ventilation system designed to transfer heat and moisture between fresh and exhaust air flows. Claims 12 and 13 recite methods of defrosting the system, and claims 32 through 34 recite methods of balancing the air flows. A copy of these claims appears in the appendix to the examiner’s supplemental answer (Paper No. 24). The references relied upon by the examiner as evidence of obviousness are: Spethmann 4,109,704 Aug. 29, 1978 Hajicek 4,497,361 Feb. 5, 1985 Besik 4,952,283 Aug. 28, 1990 Morissette et al. 5,193,610 Mar. 16, 1993 (Morissette) Noda et al., (Noda) 1 3-87547 Apr. 12, 1991 (Japanese Patent Document) Claims 12, 13 and 32 through 34 stand rejected under 35 1 An English language translation of this reference, prepared by the U.S. Patent and Trademark Office, is appended hereto. 2Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007