Oil-well cleaner
United States Patent 1400765

Inventors:
Pallette, Mellville A.
Publication Date:
12/20/1921
View Patent Images:
Download PDF 1400765 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Pallette, Mellville A.
Primary Class:
166/106
Other Classes:
166/312, 166/222, 166/57
International Classes:
E21B36/00; E21B41/00