1691778

Information

• Patent Grant
• 1691778

• References
• Source

• Patent Number

  1,691,778

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1928
  97 years ago

• CPC

  • B23K11/002 - specially adapted for particular articles or work
  • Y10S164/13 - Valve
  • Y10S220/29 - Welded seam
  • Y10T29/49304 - Valve tappet making

• US Classifications

  • 219 - Electric heating
  • 029 - Metal working
  • 123 - Internal-combustion engines
  • 164 - Metal founding
  • 220 - Receptacles
  • 251 - Valves and valve actuation