1338871

Information

• Patent Grant
• 1338871

• References
• Source

• Patent Number

  1,338,871

• Date Filed

  Not available

• Date Issued

  Tuesday, May 4, 1920
  104 years ago

• CPC

  • B21C37/152 - Making rifle and gunbarrels
  • B23P9/00 - Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact
  • C21D7/12 - by expanding tubular bodies
  • F41A21/20 - Barrels or gun tubes characterised by the material

• US Classifications

  • 089 - Ordnance
  • 277 - Seal for a joint or juncture