US PATENT SUBCLASS 359 / 420
.~.~.~ Plural magnification in same viewing field

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

362  DF  COMPOUND LENS SYSTEM {8}
399  DF  .~ Telescope {12}
419  DF  .~.~ With plural optical axes {1}
420.~.~.~ Plural magnification in same viewing field

DEFINITION

Classification: 359/420

Plural magnification in same viewing field:

(under subclass 419) Subject matter wherein telescope images of different magnification are simultaneously viewable in a common field of view.