1720933

Information

• Patent Grant
• 1720933

• References
• Source

• Patent Number

  1,720,933

• Date Filed

  Not available

• Date Issued

  Tuesday, July 16, 1929
  96 years ago

• CPC

  • B61D19/009 - both sliding and plugging, (
  • Y10T16/3828 - Swinging

• US Classifications

  • 016 - Miscellaneous hardware
  • 049 - Movable or removable closures