Proofhouse.com has Colt sn data.
If you mean a serial number on some product, it depends on what the product is. Each company can makes serial numbers mean anything they want it too.
kellogs i mean a serial code website
Assuming that by serial technologies you mean serial communication, here are some: USB - Universal Serial Bus RS232C - The original serial protocol
To follow with friend
It means that it is a duplicate serial number
It can be part of the sn, it can mean experimental, it can mean duplicate.
You have a serial number of 00000 the letters NW mean your BPS was made in 1994.The B52 could be referring to the model number.
It's part of the serial number.
645998
9700253
Serial number
Gun Registration...