1898783

Information

• Patent Grant
• 1898783

• References
• Source

• Patent Number

  1,898,783

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1933
  91 years ago

• CPC

  • G03D13/142 - with a spacing strip
  • G03D13/043 - Tanks

• US Classifications

  • 396 - Photography