3921556

Information

• Patent Grant
• 3921556

• References
• Source

• Patent Number

  3,921,556

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • B21D26/021 - Deforming sheet bodies
  • B21D26/02 - by applying fluid pressure
  • B21D53/80 - dustproof covers safety covers
  • F16K17/1606 - of the reverse-buckling-type
  • Y10T29/49405 - Valve or choke making
  • Y10T29/4943 - Plumbing fixture making

• US Classifications

  • 029 - Metal working
  • 072 - Metal deforming
  • 220 - Receptacles