1985031

Information

• Patent Grant
• 1985031

• References
• Source

• Patent Number

  1,985,031

• Date Filed

  Not available

• Date Issued

  Tuesday, December 18, 1934
  90 years ago

• CPC

  • G03B31/00 - Associated working of cameras or projectors with sound recording or reproducing means
  • G03B1/46 - Rollers engaging face of film
  • G11B15/34 - through non-skip drive means

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 226 - Advancing material of indeterminate length
  • 352 - Optics: motion pictures