Re: GTE Sylvania lamps « Reply #1 on: January 17, 2009, 09:25:47 AM » Author: TudorWhiz
I think around 1975 because my 1976 400 watt Sylvania lamp does not have a GTE in it.... However I think the package outside continued to have a GTE on it till the 80s
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	Re: GTE Sylvania lamps « Reply #3 on: January 19, 2009, 05:29:08 AM » Author: Silverliner
Wouldn't they be March and July '76? Don't forget the Sylvania dates start at '71, '81, etc.
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	Re: GTE Sylvania lamps « Reply #5 on: January 19, 2009, 11:10:37 AM » Author: TudorWhiz
Quote from: gmercury2000 on January 19, 2009, 06:45:43 AM Thats right Dave, thanks! I had the right idea I just started the wrong year. Slowly learning Giraffes learn slow but never complete due to life span.... :-P
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	Re: GTE Sylvania lamps « Reply #6 on: February 13, 2009, 09:19:03 PM » Author: icefoglights
Did they start the same system over again in 1991 or just continue it?  I have an Osram Sylvania HPS lamp with a date code of 238 which is out of range of their 10 year system, but would put it at Oct 2000 if it continued on instead of resetting in 1991.
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	Re: GTE Sylvania lamps « Reply #7 on: February 13, 2009, 09:30:12 PM » Author: TudorWhiz
When Osram bought Sylvania...date codes changed.....any Sylvania lamps from  1993-1994 and after had different codes...which looks like b348 or something like that......that's the Osram date codes...the ones before were the GTE date codes
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	Re: GTE Sylvania lamps « Reply #8 on: February 13, 2009, 09:49:12 PM » Author: icefoglights
Does anyone know how to decode those?  This lamp has b238 on it.
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	Re: GTE Sylvania lamps « Reply #9 on: February 27, 2009, 11:10:20 AM » Author: TudorWhiz
I kinda know how but I need to see a pic of the lamp itself...and the etch and all to get more info
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	Re: GTE Sylvania lamps « Reply #10 on: February 27, 2009, 12:17:34 PM » Author: icefoglights
It's this lamp.
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	Re: GTE Sylvania lamps « Reply #12 on: March 01, 2009, 09:48:27 AM » Author: TudorWhiz
Yes he is correct...Vince is correct
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	Re: GTE Sylvania lamps « Reply #13 on: March 01, 2009, 10:57:53 AM » Author: icefoglights
Thanks!
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