1437190

Information

• Patent Grant
• 1437190

• References
• Source

• Patent Number

  1,437,190

• Date Filed

  Not available

• Date Issued

  Tuesday, November 28, 1922
  103 years ago

• CPC

  • E01B31/15 - by planing or filing
  • Y10T29/44 - Filing

• US Classifications

  • 029 - Metal working