2172949

Information

• Patent Grant
• 2172949

• References
• Source

• Patent Number

  2,172,949

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1939
  85 years ago

• CPC

  • A61M1/0074 - by vacuum created above a liquid flowing from a closed container

• US Classifications

  • 417 - Pumps