US PATENT SUBCLASS 53 / 374.2
.~.~.~ With nonplanar sealing surface

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

285  DF  CLOSING PACKAGES AND FILLED RECEPTACLES {7}
373.2  DF  .~ By means adapted to engage outturned seam of package cover {6}
373.7  DF  .~.~ With means to heat or cool seam {5}
374.2.~.~.~ With nonplanar sealing surface

DEFINITION

Classification: 53/374.2

With nonplanar sealing surface:

(under subclass 373.7) Apparatus wherein the means to supply or remove thermal energy has a surface that is other than flat along the full length of the seam.