What year was the Boston Model L pencil sharpener made?

Boston was founded in 1899; in 1999 they celebrated with a 100th anniversary sharpener. In 1913, their sharpener, the Boston Pencil Pointer, was selling for about $6. In the past, people were used to more expensive sharpeners or having to sharpen pencils by knife, which wasted the lead.

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Also, how did John Lee Love invented the pencil sharpener?

He applied for a patent for a portable pencil sharpener in 1897. His application specified that his invention was an “improved device” that could double as a paperweight or ornament. The design was simple, including a hand crank and a compartment to capture the pencil shavings.

Considering this, why are there two holes in a pencil sharpener? Some sharpeners which function as a long point sharpener, have a second hole in which the blade sharpens the untouched graphite to a long, more precise point than would be otherwise possible using a single hole long point sharpener.

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