David L. Petersen

6 Patents

• US122749272025

  Adjustable Length Shaft and an Adjustable Mass for a Golf Club

  Karsten Manufacturing Corporation

  0 cites
• US121154372024

  Skateboard with Multi-wheel Truck

  Karsten Manufacturing Corporation

  0 cites
• US120364532024

  Golf Club Head Having Deflection Features and Related Methods

  Karsten Manufacturing Corporation

  0 cites
• US118504862023

  Adjustable Length Shaft and an Adjustable Mass for a Golf Club

  Karsten Manufacturing Corporation

  0 cites
• US117666012023

  Skateboard with Multi-wheel Truck

  Karsten Manufacturing Corporation

  0 cites
• US116910592023

  Adjustable Putter Shaft Stiffener

  Karsten Manufacturing Corporation

  0 cites