1971928

Information

• Patent Grant
• 1971928

• References
• Source

• Patent Number

  1,971,928

• Date Filed

  Not available

• Date Issued

  Tuesday, August 28, 1934
  90 years ago

• CPC

  • F16L51/028 - with the expansion or contraction of each corrugation being limited

• US Classifications

  • 285 - Pipe joints or couplings
  • 092 - Expansible chamber devices
  • 138 - Pipes and tubular conduits