P4

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P4

• Period 4 of the periodic table
• biosafety level 4, microbiology laboratory safety procedures to handle level-4 pathogens
• P4 Paragliding pilot rating from the United States Hang Gliding Association (USHGA)
• P4 Radio Hele Norge
• P4 Trans-Pacific Strategic Economic Partnership, a free trade agreement between Brunei, Chile, New Zealand, and Singapore
• Boeing XP-4, a prototype bi-plane fighter used by the United States Army Air Corps

P4 in Automobiles

• 1967 Ferrari 330 P4
• Peugeot P4, a 4-wheel-drive unarmoured light vehicle used by the Military of France
• Rover P4, a series of British cars of the 50s and 60s

P4 in Computers

• Intel Pentium 4, a 7th generation processor design
• Intel 80486 architecture, a 4th generation processor design
• Perforce, revision control system
• Symmetry class ("wallpaper group") p4

P4 in Model Railways

• P4 gauge