Opinion ID: 403697
Heading Depth: 3
Heading Rank: 2

Heading: Differences Between Subject Patent and Prior Art.

Text: 28 The following primary differences between the Mitchell patent and the prior art are claimed by Span-Deck: 29 (a) The Mortimer, Brown, and Kinnard patents, as well as the Kinnard application of 1960, fail to disclose the use of two sets of reversible hydraulic motors at opposite sides of the manufacturing area driving rubber-tired wheels having frictional engagement with the stress frame of the casting bed;(b) the prior art references fail to disclose the use of three areas (unloading, manufacturing, and curing) in the collinear relationship disclosed in the Mitchell patent; and 30 (c) the prior art references do not specify that the casting beds remain stationary in the curing area, as does the Mitchell patent. 31 Span-Deck also cites such secondary indicia of nonobviousness as the commercial success of the Mitchell patent. 32