{"e":{"id":286005,"source":"ia_catalogofcopyri331213libr","title":"ELECTROMAGNETS","header":"ELECTROMAGNETS. Young America Films, Inc., 1949. 11 min., sd., b&w, 16mm. Summa Explains the principle of the electromagnet and points out how it is used in doorbells, telephones, and electric motors. For elementary school science classes. Credits; Adviser, Gerald S. Craig","year":1949,"reels":null,"feet":null,"sound":false,"credits":null,"notes":[],"line_start":26501,"line_end":26516,"source_text":"ELECTROMAGNETS. Young America \n\n\nFilms, Inc., 1949. 11 min., sd., b&w, \n16mm. \n\nSumma Explains the principle of \nthe electromagnet and points out how it is \nused in doorbells, telephones, and electric \nmotors. For elementary school science \nclasses. \n\nCredits; Adviser, Gerald S. Craig. \n\n© Young America Films, Inc. ; 30Sep49; \nMP4559. ","source_meta":{"name":"Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1949","url":"https://archive.org/details/catalogofcopyri331213libr","cite":"Internet Archive catalogofcopyri331213libr (OCR text)","file":"/root/projects/publicreel/data/raw/cce_third_series/1949_catalogofcopyri331213libr_djvu.txt"},"ia_items":[],"ia_lookup":[]},"regs":[{"id":304912,"entry_id":286005,"reg_number":"MP4559","series":3,"see_also":[],"reg_class":"MP","published":true,"claimant":"Young America Films, Inc","author":null,"deposit":null,"reg_date":"1949-09-30","part":null,"part_title":null,"source_line":26515,"raw":"Summa Explains the principle of the electromagnet and points out how it is used in doorbells, telephones, and electric motors. For elementary school science classes. Credits; Adviser, Gerald S. Craig © Young America Films, Inc. ; 30Sep49; MP4559","flags":[],"status":"no-renewal-found","pd_date":"1978-01-01","reason":"no renewal entry found for 1976-1978 in the CCE motion-picture renewal sections or in the Copyright Office renewal records 1978-2025","match_kind":null,"match_confidence":null,"title_similarity":null,"renewals":[],"window":[1976,1977],"window_volumes":[{"year":1976,"ia_identifier":"1976motionpictur3301213libr"},{"year":1977,"ia_identifier":"1977motionpictur3311213libr"},{"year":1978,"ia_identifier":""}]}]}