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Date Codes on Lamptech Patrick 1 13464 June 24, 2020, 08:03:11 AM
by sox35
Notice Regarding Posting of Date Code Specs Patrick 0 10387 June 20, 2020, 11:18:36 PM
by Patrick
Japanese fluorescent lighting specifications and history PDF WorldwideHIDCollectorUSA 1 5366 March 11, 2024, 05:18:53 AM
by WorldwideHIDCollectorUSA
Date Codes? « 1 2 » wattMaster 20 20164 February 11, 2017, 04:46:57 PM
by James
Radium SOX date and age waterbug 1 3895 February 19, 2022, 09:31:05 AM
by Danny
who knows date code of this Tungsram HgLS 250? valirex 1 3736 November 21, 2021, 05:39:58 PM
by James
Appeal for field info TL8W 1 6077 February 19, 2023, 05:52:52 PM
by TL8W
Westinghouse T8/T12Fluorescent - 1960s/70s - compiled from public domain data TL8W 2 8006 January 07, 2024, 08:54:50 PM
by damon1369
Who knows datecode of these fluorescent lamps? The Lightman 5 8893 December 12, 2022, 07:09:23 PM
by James
Thorn Merthyr factory codes? SouthWalesSOX 2 6397 May 03, 2023, 03:34:41 PM
by AngryHorse
Atomic Spectra Database rjluna2 0 3241 November 03, 2021, 04:38:31 PM
by rjluna2
What are these tubes for? rafaf777 1 5439 May 06, 2024, 03:18:09 AM
by Laurens
Which lamp is older? RadiantMV 5 8799 February 29, 2024, 04:33:20 PM
by wide-lite 1000
Date code for vintage GE ballast Preheat_Carson 4 7675 July 08, 2023, 12:38:01 AM
by joseph_125
Years of manufacture of discharge lamps from TESLA and its successors Olav 0 4942 May 07, 2025, 03:25:37 AM
by Olav
Does anyone have ANSI C78.40? (Mercury Lamp Specs) Mr. Orthosilicate 1 8990 September 23, 2020, 10:18:03 AM
by James
Date code on Philips ballasts Michael 0 3551 October 22, 2022, 06:41:35 AM
by Michael
Eye Iwasaki HPMV lamp date codes Michael 4 28076 January 08, 2025, 06:19:36 AM
by Olav
OV- 15 manufacturing date? Metal Halide Boy 3 4999 January 22, 2021, 05:20:59 AM
by LightsDelight
EYE date codes Mandolin Girl 3 4375 October 30, 2021, 08:28:19 PM
by joseph_125
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