Pneumatic hammer
United States Patent 1391162

Inventors:
Armand, Bailly
Publication Date:
09/20/1921
View Patent Images:
Download PDF 1391162 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Armand, Bailly
Primary Class:
91/220
Other Classes:
91/232, 91/235, 173/17
International Classes:
B25D9/14; B25D9/00