UL-497 › Complete Document History
Standard for Protectors for Paired-Conductor Communications Circuits
Complete Current Edition: |
7TH EDITION - PROTECTORS FOR PAIRED CONDUCTO - April 25, 2001
CHANGE 06/04 - REVISION CHANGE - CODE A - June 14, 2004
CHANGE 04/09 - REVISION CHANGE - CODE A - April 9, 2009
CHANGE 07/13 - REVISION CHANGE - CODE A - July 19, 2013
CHANGE 10/17 - REVISION CHANGE - CODE A - Oct. 6, 2017
CHANGE 07/22 - REVISION CHANGE - CODE A - July 25, 2022
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Obsolete Revision Information: |
CHANGE 05/01 - PROTECTORS FOR PAIRED CONDUCTO - May 21, 2001
6TH EDITION - PROTECTORS FOR PAIRED CONDUCTO - July 25, 1995
1991 EDITION - PROTECTORS FOR COMMUNICATION C - Feb. 27, 1991
1978 EDITION - PROTECTORS FOR COMMUNICATION C - Dec. 15, 1978
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