Title:
Retractable fountain pen with closing ink valve abutment in retracting movement
United States Patent 3333576


Inventors:
Artur, Exner Hellmuth Alfred
Application Number:
US34359464A
Publication Date:
08/01/1967
Filing Date:
02/10/1964
Assignee:
Artur, Exner Hellmuth Alfred
Primary Class:
Other Classes:
401/223, 401/258, D19/171
International Classes:
B43K5/16
View Patent Images:
US Patent References:
3039436Fountain pen with retractable writing element1962-06-19
2949887Writing implement1960-08-23
2584569Ball point writing instrument1952-02-05
0284569N/A1883-09-04
0250802N/A1881-12-13
Foreign References:
GB191412230A1915-04-01