1987830

Information

• Patent Grant
• 1987830

• References
• Source

• Patent Number

  1,987,830

• Date Filed

  Not available

• Date Issued

  Tuesday, January 15, 1935
  90 years ago

• CPC

  • A61C1/142 - Operating tool blocking means
  • Y10S451/911 - Tool mounting point

• US Classifications

  • 433 - Dentistry
  • 451 - Abrading