Writing aid

Coating implements with material supply – Projectable and retractable tool – Manually reciprocable sleeve

Patent

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Details

401100, 434166, B43K 2900, B43K 900

Patent

active

055055532

ABSTRACT:
A writing aid for use with a writing instrument as a pen or pencil that is to assist the writer in applying proper pressure to the writing surface.

REFERENCES:
patent: 866148 (1907-09-01), Levingston
patent: 895511 (1908-08-01), Sturgis
patent: 971797 (1910-10-01), Smythe
patent: 1199555 (1916-09-01), Jeffries et al.
patent: 1470724 (1923-10-01), Ginsberg
patent: 3063419 (1962-11-01), Parker
patent: 3740159 (1973-06-01), Smagala-Romanoff
patent: 4601599 (1986-07-01), Katoh
patent: 4896983 (1990-01-01), Im et al.

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