2173977

Information

• Patent Grant
• 2173977

• References
• Source

• Patent Number

  2,173,977

• Date Filed

  Not available

• Date Issued

  Tuesday, September 26, 1939
  85 years ago

• CPC

  • C14C3/12 - using purified or modified vegetable tanning agents

• US Classifications

  • 560 - Organic compounds