U.S. Patent APS/Full-Text tape feed processing on town.hall.org. Notes: All references to YYMMDD below are the data file name based upon the distribution date in two digit year, month, day format. Following are the steps used to process the level 1 dissemination tape feed. 0. ex3480 -P - extract data files from IBM 3480 1/2" cartridge tape. - creates file names based on filing date, which is the previous business day in YYMMDDNN format, where NN is tape X of N. Patent tape feed typically consists of two tapes per week. 1. concatenate separate patent files into a single file name using YYMMDD format. 2. do-patent YYMMDD 3. install the processed patent documents. 4. index-patent - generate updated WAIS index of patent documents.