Inventor

BLACKWELL JOE

US3 patents

⚠️ This page may combine multiple inventors who share the name “BLACKWELL JOE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

STERN PINBALL INC

2 patents

US7070506B1Jul 4, 2006

System and method for providing pinball machine tournament play

STERN PINBALL INC47 citations86

US7967681B2Jun 28, 2011

System and method for providing enhanced amusement game tournament play

STERN PINBALL INC1 citations45

VISION IND GROUP INC

1 patent

US12467297B1Nov 11, 2025

Window balance assembly with improved brake arrangement

VISION IND GROUP INC1 citations61