1754187

Information

• Patent Grant
• 1754187

• References
• Source

• Patent Number

  1,754,187

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1930
  94 years ago

• CPC

  • G03B1/54 - Tensionning or loop-maintaining devices

• US Classifications

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