2176781

Information

• Patent Grant
• 2176781

• References
• Source

• Patent Number

  2,176,781

• Date Filed

  Not available

• Date Issued

  Tuesday, October 17, 1939
  85 years ago

• CPC

  • H01M4/72 - Grids
  • H01M4/04 - Processes of manufacture in general
  • H01M4/0485 - Casting
  • H01M4/38 - of elements or alloys
  • H01M4/42 - Alloys based on zinc
  • H01M4/56 - of lead
  • H01M10/20 - Semi-lead accumulators
  • H01M2004/027 - Negative electrodes
  • H01M2004/028 - Positive electrodes
  • H01M2300/0005 - Acid electrolytes
  • H01M2300/0011 - Sulfuric acid-based

• US Classifications

  • 164 - Metal founding