2348639

Information

• Patent Grant
• 2348639

• References
• Source

• Patent Number

  2,348,639

• Date Filed

  Not available

• Date Issued

  Tuesday, May 9, 1944
  80 years ago

• CPC

  • C09K8/18 - characterised by the organic compounds
  • G09F3/00 - Labels, tag tickets, or similar identification or indication means Seals Postage or like stamps
  • Y10S252/965 - Retrospective product identification
  • Y10S507/907 - Indicating means
  • Y10T436/13 - Tracers or tags

• US Classifications

  • 507 - Earth boring, well treating, and oil field chemistry
  • 252 - Compositions
  • 436 - Chemistry: analytical and immunological testing