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nimbi63 » Mon Aug 18, 2008 3:09 pm
Agilent (at the time HP) started using license numbers when they switched from shipping software on floppy disks to CD-ROMS. They put all the software (GC, LC, LD-3D, CE, A/D, etc.) on the same CD-ROM, then gave a license number to unlock the specific software you purchased. The license number is an algorithm and check sum on the product number (G2070AA, G2175AA, etc.)
I believe the first license numbers were A.03.01 or A.04.01. The product number is on the license packet, and the algorithm is the same, so the license number you have should still work for that product.