RM

Roger G. Massey

PC Parker And Harper Manufacturing Company: 5 patents #1 of 3Top 35%
PC Parker & Harper Companies: 5 patents #1 of 3Top 35%
📍 Exeter, NH: #35 of 228 inventorsTop 20%
🗺 New Hampshire: #1,488 of 12,181 inventorsTop 15%
Overall (All Time): #522,528 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
7025330 Bar-stock ball valve 2006-04-11
6708489 Pneumatic actuator David G. Holloway 2004-03-23
6361019 Fastening system for connecting actuators, or other attachable devices, to rotary valves 2002-03-26
5772177 Valve latching device for single handed operation David G. Holloway, Kenneth Madden 1998-06-30
5411048 Fluid control valve with latching handle assembly 1995-05-02
4909275 Latching handle David G. Holloway, Kenneth Walton 1990-03-20
4727899 Pilot valve assembly David G. Holloway 1988-03-01
4559966 Valve handle with selectable stops David G. Holloway 1985-12-24
4326627 Limit switch for rotary control device David G. Holloway 1982-04-27
4193579 Detachable handle for control devices 1980-03-18