1977504

Information

• Patent Grant
• 1977504

• References
• Source

• Patent Number

  1,977,504

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1934
  90 years ago

• CPC

  • E21B35/00 - Methods or apparatus for preventing or extinguishing fires
  • Y10S261/59 - Choke tube leaves flexible

• US Classifications

  • 251 - Valves and valve actuation
  • 138 - Pipes and tubular conduits
  • 261 - Gas and liquid contact apparatus
  • 277 - Seal for a joint or juncture