1977299

Information

• Patent Grant
• 1977299

• References
• Source

• Patent Number

  1,977,299

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1934
  90 years ago

• CPC

  • B21D47/005 - Making gratings
  • Y10T29/4962 - Grille making

• US Classifications

  • 029 - Metal working
  • 052 - Static structures