US PATENT SUBCLASS 65 / 59.23
.~.~.~.~ With firing in vacuum, in inert atmosphere, or in pumped in gas

Current as of: June, 1999
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65 /   HD   GLASS MANUFACTURING

17.1  DF  PROCESSES {32}
36  DF  .~ Fusion bonding of glass to a formed part {12}
59.1  DF  .~.~ Of glass to metal part {6}
59.2  DF  .~.~.~ Maintaining cavity in glass {8}
59.23.~.~.~.~ With firing in vacuum, in inert atmosphere, or in pumped in gas

DEFINITION

Classification: 65/59.23

With firing in vacuum, in inert atmosphere, or in pumped in gas:

(under subclass 59.2) Processes which the fusion step performed to adhere the glass and metal parts takes place in a vacuum, in an inert atmosphere, or in the presence of a

gaseous medium at super atmospheric pressure.