{"e":{"id":320170,"source":"ia_catalogofcopyr3161213libr","title":"TRIGONOMETRY AND SHADOWS","header":"TRIGONOMETRY AND SHADOWS. Calvin Productions. 26 min., sd., b&w, 16 mm","year":1961,"reels":null,"feet":null,"sound":false,"credits":null,"notes":[],"line_start":13421,"line_end":13424,"source_text":"TRIGONOMETRY AND SHADOWS. Calvin \nProductions. 26 min., sd., b&w, \n16 mm. © Calvin Productions, Inc.; \n28Apr61; MP12097. ","source_meta":{"name":"Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1962","url":"https://archive.org/details/catalogofcopyr3161213libr","cite":"Internet Archive catalogofcopyr3161213libr (OCR text)","file":"/root/projects/publicreel/data/raw/cce_third_series/1962_catalogofcopyr3161213libr_djvu.txt"},"ia_items":[],"ia_lookup":[]},"regs":[{"id":339077,"entry_id":320170,"reg_number":"MP12097","series":4,"see_also":[],"reg_class":"MP","published":true,"claimant":"Calvin Productions, Inc","author":null,"deposit":null,"reg_date":"1961-04-28","part":null,"part_title":null,"source_line":13423,"raw":"TRIGONOMETRY AND SHADOWS. Calvin Productions. 26 min., sd., b&w, 16 mm © Calvin Productions, Inc.; 28Apr61; MP12097","flags":[],"status":"no-renewal-found","pd_date":"1990-01-01","reason":"no renewal entry found for 1988-1990 or in the Copyright Office renewal records 1978-2025","match_kind":null,"match_confidence":null,"title_similarity":null,"renewals":[],"window":[1988,1989],"window_volumes":[{"year":1988,"ia_identifier":""},{"year":1989,"ia_identifier":""},{"year":1990,"ia_identifier":""}]}]}