US PATENT SUBCLASS 413 / 17
.~.~.~.~ Scoring to form fracture line

Current as of: June, 1999
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413 /   HD   SHEET METAL CONTAINER MAKING

1  DF  METHOD {3}
8  DF  .~ Forming or treating metallic closure {9}
12  DF  .~.~ Fabricating or assembling member having frangible portion (e.g., tear tab forming) {3}
15  DF  .~.~.~ Forming discontinuous frangible fracture line (e.g., push-in type with hinged tear tab) {2}
17.~.~.~.~ Scoring to form fracture line

DEFINITION

Classification: 413/17

Scoring to form fracture line:

(under subclass 15) Process including forming a line of fracture by a scoring step which thins or partially cuts through the metal closure.