US PATENT SUBCLASS 372 / 63
.~.~.~ Backflow feature

Current as of: June, 1999
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372 /   HD   COHERENT LIGHT GENERATORS

39  DF  PARTICULAR ACTIVE MEDIA {7}
55  DF  .~ Gas {6}
61  DF  .~.~ Discharge tube feature {4}
63.~.~.~ Backflow feature

DEFINITION

Classification: 372/63

Backflow feature:

(under subclass 61) Subject matter having gas flow means which bypasses the discharge path.

(1) Note. A use of this means is, for example, pressure and equalization.