1
William F Rothermel, John P Matthews, James W Walker, Wallace H Coulter: Cassette for supporting test tubes of different diameters and/or lengths. Coulter Electronics, Stephen A Roen, Gerald R Hibnick, August 13, 1985: US04534465 (78 worldwide citation)

A stackable cassette or rack for supporting a plurality of sealed sample containers having different diameters and/or lengths and transporting the same to a testing station of a hematology analyzer device. The cassette comprises a body having a top and a bottom and a rear portion, and the body inclu ...


2
John P Matthews: Apparatus and method for recording the impact location between a golf ball and a golf club. Joseph W Byrne, August 8, 2006: US07086956 (6 worldwide citation)

An apparatus and method for recording an impact location between a golf ball and a golf club is disclosed. The apparatus includes a recording member having a recording surface. The recording surface is disposed on one side of the recording member for recording the impact location between the golf ba ...


3
John P Matthews: Ergonomic chair. Hovey Williams, October 30, 2012: US08297706 (3 worldwide citation)

An ergonomic desk system and chair for promoting hip flexibility and strength and reducing lower back pain. The ergonomic desk system broadly comprises a variably positioned, raised platform, mounting assemblies for office peripherals, a recessed storage unit mounted on an underside of the platform, ...


4
John P Matthews: Ergonomic chair. Hovey Williams, December 31, 2013: US08616651 (2 worldwide citation)

An ergonomic chair for promoting hip flexibility and strength and reducing lower back pain. The ergonomic chair includes a base, a first, lower platform, and a second, upper platform spaced above the first, lower platform. The user sits on the second platform and rests their legs on the first platfo ...


5
John P Matthews: Apparatus and method for recording the impact location between a golf ball and a golf club. Boardman Suhr Curry & Field, June 10, 2004: US20040110571-A1

An apparatus and method for recording an impact location between a golf ball and a golf club is disclosed. The apparatus includes a recording member having a napped surface. The napped surface is disposed on one side of the recording member for recording the impact location between the golf ball and ...


6
John P Matthews: Apparatus and method for recording the impact location between a golf ball and a golf club. Boardman Suhr Curry & Field, October 20, 2005: US20050233820-A1

An apparatus and method for recording an impact location between a golf ball and a golf club is disclosed. The apparatus includes a recording member having a recording surface. The recording surface is disposed on one side of the recording member for recording the impact location between the golf ba ...


7
John P Matthews: Ergonomic desk system and chair. Hovey Williams, March 18, 2010: US20100066148-A1

An ergonomic desk system and chair for promoting hip flexibility and strength and reducing lower back pain. The ergonomic desk system broadly comprises a variably positioned, raised platform, mounting assemblies for office peripherals, a recessed storage unit mounted on an underside of the platform, ...