Patent ID: 11931640
Assignee: nan
Field: Furniture, games (Other fields)
Classification: CPC A  G | IPC A  G

Claim 19:
20. An IP structure as in claim 10 wherein the OI structure is incorporated into a tennis court for which the exposed surface has (a) two opposite baselines, (h) two opposite sidelines extending between the baselines to define inwardly an in-bounds playing area, (c) two opposite servicelines situated between the baselines and extending lengthwise between the sidelines, and (d) a centerline situated between the sidelines and extending lengthwise between the servicelines, a backcourt of the in-bounds area defined by each baseline, the sidelines, and the serviceline closest to that baseline so as to establish two backcourts, the object being a tennis ball, the surface zone comprising VC backcourt area which comprises two VC backcourt area portions respectively partly occupying the backcourts and respectively adjoining the servicelines along largely their entire lengths.