{"e":{"id":293899,"source":"ia_catalogofcopyrig371213lib","title":"TELEVISION: HOW IT WORKS!","header":" Summary: Scenes within a television station are used to explain the basic principles of television broadcasting and reception. Shows the operation of a cathode ray tube, an image orthicon tube, an electron gun, deflecting coils, and a syne-generator. Credits: Educational collaborator, Marvin Camras","year":1952,"reels":null,"feet":null,"sound":false,"credits":null,"notes":[],"line_start":20755,"line_end":20765,"source_text":"Summary: Scenes within a television sta- \ntion are used to explain the basic principles \nof television broadcasting and reception. \nShows the operation of a cathode ray tube, \nan image orthicon tube, an electron gun, de- \nflecting coils, and a syne-generator. \n\nCredits: Educational collaborator, Marvin \nCamras. \n\n© John Smart; 16Dec52; MP3305. ","source_meta":{"name":"Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1953","url":"https://archive.org/details/catalogofcopyrig371213lib","cite":"Internet Archive catalogofcopyrig371213lib (OCR text)","file":"/root/projects/publicreel/data/raw/cce_third_series/1953_catalogofcopyrig371213lib_djvu.txt"},"ia_items":[],"ia_lookup":[]},"regs":[{"id":312806,"entry_id":293899,"reg_number":"MP3305","series":4,"see_also":[],"reg_class":"MP","published":true,"claimant":"John Smart","author":null,"deposit":null,"reg_date":"1952-12-16","part":null,"part_title":null,"source_line":20765,"raw":"broadcasting and reception. Shows the operation of a cathode ray tube, an image orthicon tube, an electron gun, deflecting coils, and a syne-generator. Credits: Educational collaborator, Marvin Camras © John Smart; 16Dec52; MP3305","flags":["see_reference_in_head"],"status":"renewed","pd_date":"2048-01-01","reason":"renewal RE74757 filed 1980-11-28 by Coronet Instructional Media (number+date; Copyright Office public records dataset, record 6972233)","match_kind":"number+date","match_confidence":"high","title_similarity":1.0,"renewals":[{"id":386943,"volume_year":1980,"renewal_number":"RE74757","title":"Television: how it works!","description":null,"orig_date":"1952-12-16","orig_date_raw":"1952-12-16","orig_number":"MP3305","orig_number_raw":"MP3305","orig_number_digits":3305,"renewal_claimant":"Coronet Instructional Media","renewal_basis":"PWH","renewal_date":"1980-11-28","renewal_date_raw":"1980-11-28","part":null,"part_title":null,"parent_title":null,"see_refs":[],"see_also":[],"flags":["usco"],"source_file":"usco/renewal_2026_01","source_line":6972233,"raw":"{\"control\": \"6972233\", \"017\": [\"RE0000074757 /\", \"MP0000003305 /\"], \"017d\": \"1980-11-28\", \"008\": \"070612e19521216xx ||||||||||||||||||||\", \"names\": [[\"700\", \"Camras, Marvin\"], [\"710\", \"Coronet Instructional Media\"]], \"title\": \"Television: how it works! By Marvin Camras.\", \"alternate_title\": \"Television: how it works!\", \"claimants\": [\"Coronet Instructional Media (PWH)\"], \"work_type\": \"X Motion picture or filmstrip\"}","raw_sha":"76780876dcc069e28e9cb2f6414cb12d4a8991f2","match_kind":"number+date","title_similarity":1.0,"ia_identifier":"","kind":"usco","context":"","llm":[]}],"window":[1979,1980],"window_volumes":[{"year":1979,"ia_identifier":""},{"year":1980,"ia_identifier":""},{"year":1981,"ia_identifier":""}]}]}