1352998

Information

• Patent Grant
• 1352998

• References
• Source

• Patent Number

  1,352,998

• Date Filed

  Not available

• Date Issued

  Tuesday, September 14, 1920
  104 years ago

• CPC

  • B63B3/22 - with corrugations
  • Y02T70/121 - Reducing surface friction

• US Classifications

  • 114 - Ships