3889575

Information

• Patent Grant
• 3889575

• References
• Source

• Patent Number

  3,889,575

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1975
  50 years ago

• CPC

  • B23C3/005 - Rails
  • E01B31/13 - by milling
  • Y10T409/306496 - with work follower

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 451 - Abrading