Donald O. Parker

Person

Grand Rapids, MI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Low profile coin analyzer apparatus
- Patent number 5,566,808
- Issue date Oct 22, 1996
- Parker Engineering & Manufacturing Co.
- Donald O. Parker
- G07 - CHECKING-DEVICES
Information Patent Grant
Coin analyzer sensor configuration and system
- Patent number 5,439,089
- Issue date Aug 8, 1995
- Donald O. Parker
- G07 - CHECKING-DEVICES
Information Patent Grant
Coin analyzer sensor configuration and system
- Patent number 5,293,980
- Issue date Mar 15, 1994
- Donald O. Parker
- G07 - CHECKING-DEVICES
Information Patent Grant
Coin detector system
- Patent number 5,226,520
- Issue date Jul 13, 1993
- Donald O. Parker
- G07 - CHECKING-DEVICES
Information Patent Grant
Coin analyzer system and apparatus
- Patent number 5,056,644
- Issue date Oct 15, 1991
- Donald O. Parker
- G07 - CHECKING-DEVICES
Information Patent Grant
Apparatus and method for restarting a coin operated device after ex...
- Patent number 4,926,997
- Issue date May 22, 1990
- Donald O. Parker
- G07 - CHECKING-DEVICES
Information Patent Grant
Coin analyzer system and apparatus
- Patent number 4,884,672
- Issue date Dec 5, 1989
- Parker Engineering & Manufacturing Co.
- Donald O. Parker
- G07 - CHECKING-DEVICES
Information Patent Grant
Coin detector system
- Patent number 4,469,213
- Issue date Sep 4, 1984
- Raymond Nicholson
- G07 - CHECKING-DEVICES
Information Patent Grant
Coin detector apparatus
- Patent number 4,437,558
- Issue date Mar 20, 1984
- Raymond Nicholson
- G07 - CHECKING-DEVICES

Donald O. Parker

Person

Patents Grantslast 30 patents

Low profile coin analyzer apparatus

Coin analyzer sensor configuration and system

Coin analyzer sensor configuration and system

Coin detector system

Coin analyzer system and apparatus

Apparatus and method for restarting a coin operated device after ex...

Coin analyzer system and apparatus

Coin detector system

Coin detector apparatus