UL-497A › Complete Document History
Standard for Secondary Protectors for Communications Circuits
Complete Current Edition: |
3RD EDITION - Standard for Secondary Protectors for Communications Circuit - March 20, 2001
CHANGE 06/04 - REVISION CHANGE - CODE A - June 14, 2004
CHANGE 10/08 - REVISION CHANGE - CODE A - Oct. 1, 2008
CHANGE 12/12 - REVISION CHANGE - CODE A - Dec. 13, 2012
CHANGE 02/17 - REVISION CHANGE - CODE A - Feb. 10, 2017
CHANGE 03/17 - REVISION CHANGE - CODE A - March 30, 2017
CHANGE 10/19 - REVISION CHANGE - CODE A - Oct. 17, 2019
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Obsolete Revision Information: |
2ND EDITION - Standard for Secondary Protectors for Communications Circuit - Jan. 30, 1996
CHANGE 05/92 - Standard for Secondary Protectors for Communications Circuit - May 12, 1992
CHANGE 09/90 - Standard for Secondary Protectors for Communications Circuit - Sept. 5, 1990
1ST EDITION - Standard for Secondary Protectors for Communications Circuit - Jan. 15, 1990
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