3503308

Information

• Patent Grant
• 3503308

• References
• Source

• Patent Number

  3,503,308

• Date Filed

  Not available

• Date Issued

  Tuesday, March 31, 1970
  54 years ago

• CPC

  • A47L9/1454 - Self-sealing closures
  • Y10S55/02 - Vacuum cleaner bags
  • Y10S55/05 - Methods of making filter
  • Y10S493/962 - Closure
  • Y10T29/49861 - Sizing mating parts during final positional association
  • Y10T29/49863 - with prestressing of part
  • Y10T29/49945 - by driven force fit
  • Y10T137/7845 - With common biasing means
  • Y10T137/788 - Having expansible port
  • Y10T137/7901 - Valve head movably connected for accommodation to seat
  • Y10T156/1056 - Perforating lamina

• US Classifications

  • 493 - Manufacturing container or tube from paper
  • 029 - Metal working
  • 055 - Gas separation
  • 156 - Adhesive bonding and miscellaneous chemical manufacture