Title:
Portfolio
United States Patent 2378020

Inventors:
Langworthy, Norval B.
Publication Date:
06/12/1945
View Patent Images:
Download PDF 2378020 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Langworthy, Norval B.
Primary Class:
281/2
Other Classes:
229/72
International Classes:
B42F7/00