US PATENT SUBCLASS 473 / 155
.~.~.~.~ Including sensor responsive to projectile on addressing surface or in flight (e.g., tee-target time detection, etc.)

Current as of: June, 1999
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473 /   HD   GAMES USING TANGIBLE PROJECTILE

131  DF  GOLF {23}
150  DF  .~ Projectile addressing surface and target, or distance marker (e.g., course, putting green with cup, driving range, miniature golf course, etc.) {7}
151  DF  .~.~ Electrical sensor or electrical indicator responsive to swingable implement or projectile {1}
152  DF  .~.~.~ Sensor is projectile responsive (e.g., free-flight detection means, etc.) {3}
155.~.~.~.~ Including sensor responsive to projectile on addressing surface or in flight (e.g., tee-target time detection, etc.) {1}
156  DF  .~.~.~.~.~> Pictorial flight path image display

DEFINITION

Classification: 473/155

Including sensor responsive to projectile on addressing surface or in flight (e.g., tee-target time detection, etc.):

(under subclass 152) Subject matter including means to detect a condition of the object while it is at the location to be struck; or including means to detect a condition of the object while it is moving toward the member at which it is aimed.