1688424

Information

• Patent Grant
• 1688424

• References
• Source

• Patent Number

  1,688,424

• Date Filed

  Not available

• Date Issued

  Tuesday, October 23, 1928
  96 years ago

• CPC

  • B24B19/006 - for grinding hollow glassware, bottles
  • Y10T279/11 - Vacuum

• US Classifications

  • 451 - Abrading
  • 269 - Work holders
  • 279 - Chucks or sockets