Balls (273/58r) Patents (Class 473/FOR134)

Baseball (273/60r) (Class 473/FOR135)

Tennis (273/61r) (Class 473/FOR138)

Football and basketball (273/65r) (Class 473/FOR143)

Closure (273/65A) (Class 473/FOR144)
Bladders (273/65B) (Class 473/FOR145)
Valves: composite (273/65C) (Class 473/FOR146)
Valves: rubber (273/65D) (Class 473/FOR147)
Casings (273/64E) (Class 473/FOR148)
Closure means (273/65F) (Class 473/FOR156)

Solid and covered (273/58a) (Class 473/FOR157)

Hollow: single layer (273/58b) (Class 473/FOR158)

Plural layer (273/58ba) (Class 473/FOR159)

Tethered (273/58c) (Class 473/FOR160)

Skeleton (273/58d) (Class 473/FOR161)

Sounding (273/58e) (Class 473/FOR162)

Loose internal elements (273/58f) (Class 473/FOR163)

Including electrical components (273/58g) (Class 473/FOR164)

Liquid containing (273/58h) (Class 473/FOR165)

Rubber formulation (273/58j) (Class 473/FOR166)

Surface projections (273/58k) (Class 473/FOR167)

There are no patents to show for this class.