Inventor

PIOTROWSKI PETER J

US8 patents

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

WILLIAMS ELECTRONICS GAMES INC

3 patents

US6120021ASep 19, 2000

Lock-down bar release system for a pinball machine

WILLIAMS ELECTRONICS GAMES INC124 citations97

US6129353AOct 10, 2000

Method of displaying video images projected from a video display of a pinball machine

WILLIAMS ELECTRONICS GAMES INC130 citations92

US5697612ADec 16, 1997

Jet bumper for a pinball game

WILLIAMS ELECTRONICS GAMES INC122 citations92

(unassigned)

2 patents

US5913516AJun 22, 1999

Multimode target with variable trajectory ball ramp

8 citations68

US5915693AJun 29, 1999

Jump rope play feature for a pinball game

3 citations57

PEPSICO INC

1 patent

US4165874AAug 28, 1979

Golf club shaft and set of golf clubs

PEPSICO INC96 citations91

THE BEN HOGAN COMPANY

1 patent

USD318512SJul 23, 1991

Golf club head

THE BEN HOGAN COMPANY42 citations86

FENTON JR FRANCIS A

1 patent

US6491778B1Dec 10, 2002

Bent tip composite golf shaft

FENTON JR FRANCIS A15 citations81