Mark D. Ritchie

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Carol Stream, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Pinball solenoid power control system
- Patent number 5,655,770
- Issue date Aug 12, 1997
- Capcom Coin-Op, Inc.
- Mark Dean Ritchie
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Ball trough for pinball games
- Patent number 5,497,989
- Issue date Mar 12, 1996
- Capcom Coin-Op, Inc.
- Mark D. Ritchie
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Tilting play feature for a pinball game
- Patent number 5,405,144
- Issue date Apr 11, 1995
- Williams Electronics Games, Inc.
- Mark D. Ritchie
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Rotary ball receptacle for a pinball game
- Patent number 5,322,283
- Issue date Jun 21, 1994
- Williams Electronics Games, Inc.
- Mark D. Ritchie
- A63 - SPORTS GAMES AMUSEMENTS