Title:
WRITING IMPLEMENT
United States Patent 3421823


Inventors:
Matsumoto, Hiroyuki
Application Number:
US3421823DA
Publication Date:
01/14/1969
Filing Date:
06/21/1965
Assignee:
DAINIHON BUNGU CO LTD
Primary Class:
International Classes:
B43K8/02; (IPC1-7): B43K5/18
View Patent Images:
US Patent References:
3290717Pen1966-12-13
3203025Writing instrument1965-08-31
2726416Liquid applicator1955-12-13
2453201Marking device1948-11-09
2416596Fountain pen1947-02-25
1166896N/A1916-01-04