Pen for writing a double line

Details Pen for writing a double line Pen for writing a double line

1976-12-10

1978-10-17

Pellegrino, Stephen C.

Coating implements with material supply

Plural exposed tools each with individual supply

Side-by-side

B43K 2704, B43K 2708

Patent

active

041205952

ABSTRACT:
A pen having a hollow barrel with an open end and a closed end and two ink tubes in the barrel having one end secured to the closed end and having the other ends of the ink tubes extending through the open end, a ball extending out of the end of each ink tube, the ink tubes being free to twist upon each other in the said open end, thereby providing an interesting pattern in writing.

REFERENCES:
patent: 2585016 (1952-02-01), Kollsman

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