2256408

Information

• Patent Grant
• 2256408

• References
• Source

• Patent Number

  2,256,408

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1941
  83 years ago

• CPC

  • B01D67/0006 - by chemical reactions
  • B01D39/1669 - Cellular material
  • B01D71/24 - Rubbers
  • B29D99/006 - Producing casings
  • H01M2/14 - Separators Membranes Diaphragms Spacing elements
  • B01D2239/10 - Filtering material manufacturing
  • B29L2031/712 - Containers; Packaging elements or accessories, Packages

• US Classifications

  • 521 - Synthetic resins or natural rubbers