Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B31
MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
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B31B
MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
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B31B2160/10
rectangular and flat, i.e. without structural provision for thickness of contents
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B31B2160/104
obtained from rhombus shaped sheets
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B31B2160/104

Envelope-outlining device
09914277 · 2018-03-13 ·

An envelope-outlining device that comprises first and second tracing members, the members being movable relative to each other. Each tracing member has a respective tracing edge, and each tracing edge has a protrusion extending from the tracing edge. A method of using the same is also disclosed.