| 473 / | HD | GAMES USING TANGIBLE PROJECTILE |
| FOR 134 | DF | BALLS (273/58R) {14} |
| FOR 138 | | .~ Tennis (273/61R) {4} |
| FOR 139 | DF | .~.~> Ping-pong balls (273/61A) |
| FOR 140 | DD | .~.~> Fabrics, per se (273/61B) |
| FOR 141 | DD | .~.~> Rubber formulations (273/61C) |
| FOR 142 | DD | .~.~> Methods of pressurizing (273/61D) |