Inventor

Sidney N Rosenthal

Patents indexed

Year range

1955

Associated with

Years active

1955

Total patents

Most recent

1955

Domains

mechanicalconsumer_electronics

Activity by decade

1950s

Patents

Career timeline

1 patents, in 1955

Dot size = forward citations

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How a Simple Felt-Tip Marker Works

A 1953 design for a handheld marking tool that uses a porous tip to deliver ink from an internal reservoir.

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