3777424

Information

• Patent Grant
• 3777424

• References
• Source

• Patent Number

  3,777,424

• Date Filed

  Not available

• Date Issued

  Tuesday, December 11, 1973
  51 years ago

• CPC

  • E06B7/2318 - by applying over- or under-pressure
  • B61D19/009 - both sliding and plugging, (

• US Classifications

  • 049 - Movable or removable closures