Matches 51 - 57 out of 57 < 1 2
Match Document Document Title
5031909 Electronic athletic equipment  
Electronic athletic equipment is provided by installing one or more force sensors beneath selected strings loops which secure a string bed to a racquet, or the like. The string loops are selected...
4852875 Racquet swing training apparatus  
A swing training apparatus for use with a hand held sports implement having a head and a handle with a longitudinal axis extending between the head and handle includes a housing that is mounted to...
4515368 Golf club swing training device  
A device for improving the mechanics of a golfer's swing which is attached to the golf club and adjacent to the grip, and which emits a continuous audible signal so long as the device is subjected...
4191378 Golf putter with detachable magnetic tape player cartridge  
A golf putter having an elongated putter head of C-shaped configuration with an open side opposite the hitting face detachably carries a laterally insertable magnetic tape player cartridge which is...
3380305 Baseball and baseball bat toy  
3226704 Golf club accelerometer  
3106403 Club swing momentum indicator  
Matches 51 - 57 out of 57 < 1 2