ISO-13050 Complete Document History
Synchronous belt drives - Metric pitch, curvilinear profile systems G, H, R and S, belts and pulleys

Complete Current Edition:
   3RD EDITION - Metric pitch, curvilinear profile systems G, H, R and S, belts and pulleys - March 1, 2022

Obsolete Revision Information:
   2ND EDITION - Synchronous belt drives - Metric pitch, curvilinear profile systems G, H, R and S, belts and pulleys - Dec. 1, 2014
   1ST EDITION - Curvilinear toothed synchronous belt drive systems - Dec. 15, 1999