History of Dual Layer DVD?

Video Asylum

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When did dual layer DVDs first make their appearance?
I was trying to make a back-up copy of a heavily used DVD from 2002. As the writing process began, I was informed my 4.7gb media was too small. Indeed, this DVD has 7.25gb on it, but properties does not say if it's DL or not. The earliest reference I can find to DVD DL is July, 2004, in reference to a first ever Sony DVD+R DL burner.
Was DVD DL in commercial use on or before 2002?

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Parts Connexion

Topic - History of Dual Layer DVD? - Moontan13 05:27:34 08/24/06 (1)

1998 (nt) - racerguy 10:45:39 08/24/06 (0)

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