{"e":{"id":304648,"source":"ia_catalogofcopyrig3111213li","title":"HEATING OF SEMI-KILLED STEEL","header":"HEATING OF SEMI-KILLED STEEL. United States Steel Corp. Made by Wilding Picture Productions. 7 min., sd., b&w, 16 mm. (USS quality series)","year":1957,"reels":null,"feet":null,"sound":false,"credits":null,"notes":[],"line_start":35564,"line_end":35570,"source_text":"HEATING OF SEMI-KILLED STEEL. United \nStates Steel Corp. Made by Wilding \nPicture Productions. 7 min., sd., \nb&w, 16 mm. (USS quality series) \n\n© United States Steel Corp.; \n1Ju157; MP870. ","source_meta":{"name":"Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1957","url":"https://archive.org/details/catalogofcopyrig3111213li","cite":"Internet Archive catalogofcopyrig3111213li (OCR text)","file":"/root/projects/publicreel/data/raw/cce_third_series/1957_catalogofcopyrig3111213li_djvu.txt"},"ia_items":[],"ia_lookup":[]},"regs":[{"id":323555,"entry_id":304648,"reg_number":"MP870","series":4,"see_also":[],"reg_class":"MP","published":true,"claimant":"United States Steel Corp","author":null,"deposit":null,"reg_date":"1957-07-01","part":null,"part_title":null,"source_line":35569,"raw":"HEATING OF SEMI-KILLED STEEL. United States Steel Corp. Made by Wilding Picture Productions. 7 min., sd., b&w, 16 mm. (USS quality series) © United States Steel Corp.; 1Ju157; MP870","flags":[],"status":"uncertain","pd_date":null,"reason":"registration number MP870 does not fit the numbering of 1957; the catalog date or number is likely misprinted","match_kind":null,"match_confidence":null,"title_similarity":null,"renewals":[],"window":[1984,1985],"window_volumes":[{"year":1984,"ia_identifier":""},{"year":1985,"ia_identifier":""},{"year":1986,"ia_identifier":""}]}]}