MH

Mark J. Hoffenberg

SB Schwinn Bicycle: 5 patents #4 of 25Top 20%
Overall (All Time): #768,539 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4976424 Load control for exercise device Bruce A. Sargeant, Rob Reasons, Robert A. Walpert 1990-12-11
4955600 Bicycle support and load mechanism Robert A. Walpert 1990-09-11
4951937 Load mechanism for exercise devices Robert A. Walpert 1990-08-28
4938475 Bicycle racing training apparatus Bruce A. Sargeant, Rob Reasons, Robert A. Walpert 1990-07-03
D304963 Bicycle exercise stand Bruce A. Sargeant, Robert Reasons, Robert A. Walpert, James Lindsay 1989-12-05
4834363 Bicycle racing training apparatus Bruce A. Sargeant, Rob Reasons, Robert A. Walpert 1989-05-30
4815730 Bicycle support and load mechanism Robert A. Walpert 1989-03-28