What does MUL stand for?

Manned Underwater Laboratories - Marine science (MSC)

Manufacturing under Licence - British (DS)

Marlum Marine Aluminum Fabrication, Duvall, WA - Manufacturer code for watercraft hull identification number (USCG)

Master Urgency List - Navy

Mobile-Moored Undersea Laboratory

Mobile User Link (SAUS)

Modify User Login (AAEL)

Moultrie, GA - Location identifier - FAA (FAAL)

Mueller - NCIC firearms make code (NCIC)

Mullan - Idaho - Seismograph station code, US Geological Survey (SEIS)

Mulsanne - NCIC car model code

MULS - Minnesota Union List of Serials, Minneapolis, MN - OCLC symbol (OCLC)

Multicare Cos. - NYSE symbol

Multiplexer

Multiply (MDG)

Mumuye - Language symbol (ETLW)

Multilingual - MARC language code - Library of Congress (LCCP)