1540939

Information

• Patent Grant
• 1540939

• References
• Source

• Patent Number

  1,540,939

• Date Filed

  Not available

• Date Issued

  Tuesday, June 9, 1925
  100 years ago

• CPC

  • F22B37/06 - Flue or fire tubes Accessories therefor
  • B21F27/08 - with additional connecting elements or material at crossings
  • B27J1/006 - by strand or wire twisting
  • E04G21/122 - Machines for joining reinforcing bars
  • F22B1/22 - using combustion under pressure substantially exceeding atmospheric pressure

• US Classifications

  • 140 - Wireworking