Ski made of hollow oval body - Is made of two curved parts, one with ribs to engage edges of other, may also have third and fourth parts as reinforcement
DE4124519A1
Hollow ski with internal struts - made of elastic material, pref. polyurethane
DE4114014A1
Moulded piece on each arm of centre of hollow tennis racquet frame - is screwed with head inside hollow frame in hole covered by cap
EP0452448A1
Process for making a ski
DE3936378A1
Mfg. hollow extruded ski - by cutting extruded section to size, rolling or pressing with increasing pressure away from ski centre, and shaping into flat lens
DE3924661A1
Hollow profile ski
DE3715738A1
Frame for a tennis racket
DE3024234A1
FRAME FOR A TENNIS RACKET
US4176841A
Tennis racket
DE2800572A1
Frame for tennis racquet - is formed from hollow metal profile with bores for strings fitted in grooves extending round outside
DE2738997A1
Tennis racket with hollow section frame - deflects under impact of ball to increase elasticity and help control stroke played
DE2642978A1
Tennis racquet with high friction stringing - has friction inserts with V-shape grooves wedged at crossing point of strings
DE2625708A1
Marking tape for tennis courts - transmits signal, when hit by ball using internal wires touching when tape is compressed
DE2461890A1
Ski with metal or plastic guide fillets - has antiwear fillets on edges and projecting below running surface
