2225040

Information

• Patent Grant
• 2225040

• References
• Source

• Patent Number

  2,225,040

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1940
  84 years ago

• CPC

  • B29D11/00259 - Plants for the production of contact lenses
  • B29D11/00048 - composed of parts with dissimilar composition
  • G02C7/04 - Contact lenses for the eyes
  • Y10T29/5105 - Drill press
  • Y10T409/307896 - with work holder or guide

• US Classifications

  • 029 - Metal working
  • 269 - Work holders
  • 351 - Optics: eye examining, vision testing and correcting
  • 409 - Gear cutting, milling, or planing
  • D15 - Machines not elsewhere specified