Similar to 立花孝志襲撃事件
 - OH-6 (航空機)Hughes OH-6 Cayuse
 - OJ 287OJ 287
 - OMA LWM2MOMA LWM2M
 - Open vSwitchOpen vSwitch
 - OSGeo財団Open Source Geospatial Foundation
 - Paintgraphic
 - Pandora FMSPandora FMS
 - PascalPascal (programming language)
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 - PCCカー (ハーグ市電)
 - PDP-10PDP-10
 - PDP-8PDP-8
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 - Plus500Plus500
 - PMC-SierraPMC-Sierra
 - PoluxPolux
 - PortableApps.comPortableApps.com
 - PowerPC 604PowerPC 600#PowerPC 604
 - PO箱Post office box (electricity)
 - Project Engine
 - Project-JE
- Project64Project64
 - PSLVPolar Satellite Launch Vehicle
 - Raspberry Pi 財団Raspberry Pi Foundation
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