Appeal No. 1998-3128 Page 8
Application No. 08/624,874
disseminate manufacturing data to, and to collect data from,
many MCU's (see FIG. 1)." Col. 3, ll. 12-14. Because the
MCUs transfer data to the intermediate computer and host, the
units necessarily include the claimed "means for storing a
file of information to be transferred to said central
computer" and the computers must necessarily include the
claimed "means for requesting an information transfer between
said central computer and one of said controllers."
The use of addressing in computer and control systems to
select between controllers and other devices attached to a bus
was old and well known in the art. Because the reference
teaches the plural MCUs on the bus, Austin's computers must
necessarily include the claimed "means for selectively
addressing each of said controllers ...."
Second, the appellant argues, "the MCU 9 lacks a multi-
tasking feature, which feature is positively recited in claim
1." (Appeal Br. at 11.) “Generally, ... the preamble does
not limit the claims.” DeGeorge v. Bernier, 768 F.2d 1318,
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