Appeal No. 1996-0910 Application 08/118,368 that prior to the critical date the inventor had prepared drawings or other descriptions of the invention that were sufficiently specific to enable a person skilled in the art to practice the invention. See Pfaff v. Wells Electronics Inc., 119 S.Ct. 304, 311-12, 48 USPQ2d 1641, 1646-47 (1998). If, however, the primary purpose underlying an offer for sale is experimental rather than commercial, then the product is not on sale within the meaning of the statute. See In re Hamilton, 882 F.2d 1576, 1579, 11 USPQ2d 1890, 1893 (Fed. Cir. 1989). The copy of Boeing Purchase Order No. B 258096 of record conveys few details regarding the transaction between Boeing and Ingersoll Milling Machine Co. (Ingersoll) which forms the basis for the examiner’s rejection. It is not disputed, however, that the transaction involved the “purchase” by Boeing from Ingersoll of two single station HAL cells made pursuant to Boeing specification # L-2433, and that the “purchase” occurred more than one year prior to the critical 4Page: Previous 1 2 3 4 5 6 7 8 9 NextLast modified: November 3, 2007