US PATENT SUBCLASS 451 / 323
.~.~.~.~ Lens abrader

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
312  DF  .~ Stationary tool {2}
319  DF  .~.~ Rigid {2}
320  DF  .~.~.~ Reciprocating work holder {2}
323.~.~.~.~ Lens abrader

DEFINITION

Classification: 451/323

Lens abrader:

(under subclass 320) Abrading machine specifically disclosed for grinding an optical device made from glass, plastic, or other transparent material.

(1) Note. This subclass takes a device for lens surface polishing as well as one for lens generating.

SEE OR SEARCH THIS CLASS, SUBCLASS:

42, for a method of grinding a lens.

240, 255, 256, and 277, for other lens grinders.