3820222

Information

• Patent Grant
• 3820222

• References
• Source

• Patent Number

  3,820,222

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • B21D39/066 - using explosives
  • B21D26/08 - generated by explosives
  • Y10T29/49352 - Repairing, converting, servicing or salvaging
  • Y10T29/49375 - including conduit expansion or inflation
  • Y10T29/49732 - by attaching repair preform, e.g., remaking, restoring, or patching
  • Y10T29/49806 - Explosively shaping

• US Classifications

  • 029 - Metal working