2250468

Information

• Patent Grant
• 2250468

• References
• Source

• Patent Number

  2,250,468

• Date Filed

  Not available

• Date Issued

  Tuesday, July 29, 1941
  83 years ago

• CPC

  • G09B19/0007 - Signalling

• US Classifications

  • 568 - Organic compounds
  • 508 - Solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions