Title:
Drawing pin with detachable plastic lead
United States Patent 3121365
Inventors:
Masaji, Hayashi
Publication Date:
02/18/1964
Export Citation:
Click for automatic bibliography generation
Assignee:
Masaji, Hayashi
Primary Class:
411/439
Other Classes:
402/70
International Classes:
B43M15/00; B43M15/00
View Patent Images:
Download PDF 3121365        PDF help
US Patent References:
3009382Thumbtack having a concave top face
2939468Utility peg
2615223Buckle for straps and the like
2341121Clip
1756186N/A
1693875Thumb tack
0903724N/A
Foreign References:
AT150525B