US PATENT SUBCLASS 451 / 42
.~.~ Lens
Current as of:
June, 1999
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451 /
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ABRADING
28
DF
ABRADING PROCESS
{19}
41
DF
.~ Glass or stone abrading {2}
42
.~.~ Lens {1}
43
DF
.~.~.~
> Edging
DEFINITION
Classification: 451/42
Lens:
(under subclass 41) Method for grinding a member intended to transmit and refract light.
(1) Note. This subclass takes lens surface polishing as well lens generating.
SEE OR SEARCH THIS CLASS, SUBCLASS:
240, 255, 256, 277, and 323, for a lens grinding machine.
SEE OR SEARCH CLASS
15, Brushing, Scrubbing, and General Cleaning,
214, for a lens wiper, dauber, or polisher.
65, Glass Manufacturing, 37+, for a process of uniting glass to glass to make a multifocal lens with or without a step of grinding.
351, Optics: Eye Examining, Vision Testing and Correcting,
177, for a miscellaneous method of making an ophthalmic lens.
359, Optics: Systems (Including Communication) and Elements,
819, for a lens mount.
