In 1997 there were about 500 companies
Companies under SIC 3669 employed 25,000 workers in 1997
Total shipments for SIC 3669 were valued more than $4.2 billion in 1997
SIC 3669 covers makers of railroad signaling devices
SIC 3669 covers makers of traffic control equipment
Establishments primarily engaged in manufacturing electric signal equipment are classified in SIC 3669: Communications Equipment, Not Elsewhere Classified
In 2001, there were 431 firms operating 468 establishments in this industry
In 2001, there were 431 firms operating 468 establishments in this industry
About 320 U.S. companies competed in the commercial lighting fixture industry in 1997, with about half of all establishments employing 20 or more workers.
In 1990 this industry had 237 companies. This number rose to 573 in 1997, but fell back to 216 in 2001.
Important products of this industry include intercommunication equipment, traffic signaling equipment, and fire and burglar alarm apparatus
SIC Internacional was created in 1997.
Title insurance companies are classified in SIC 6361