US PATENT SUBCLASS 373 / 110
.~ With internal atmosphere control (e.g., pressure, vacuum, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


373 /   HD   INDUSTRIAL ELECTRIC HEATING FURNACES

109  DF  RESISTANCE FURNACE DEVICE {7}
110.~ With internal atmosphere control (e.g., pressure, vacuum, etc.) {2}
111  DF  .~.~> Having tubular charge containing or supporting element
112  DF  .~.~> Vacuum

DEFINITION

Classification: 373/110

With internal atmosphere control (e.g., pressure, vacuum, etc.):

(under subclass 109) Subject matter wherein the environment within the furnace housing is regulated to have a specific pressure, a vacuum, or a specific medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

68, for ingot remelting arc furnaces with internal atmosphere control.

77, for arc furnace internal atmosphere control in general.

140+, for induction furnace internal atmosphere control.