3630787

Information

• Patent Grant
• 3630787

• References
• Source

• Patent Number

  3,630,787

• Date Filed

  Not available

• Date Issued

  Tuesday, December 28, 1971
  53 years ago

• CPC

  • H01M2/368 - by closing the vent passages with a valve
  • H01M2/043 - for large-sized cells or batteries
  • H01M2/0434 - Methods for assembling case and cover
  • H01M2/12 - Vent plugs or other mechanical arrangements for facilitating escape of gases
  • H01M10/484 - for measuring electrolyte level, electrolyte density or electrolyte conductivity

• US Classifications

  • 429 - Chemistry: electrical current producing apparatus, product, and process