Boat propulsion apparatus
United States Patent 2213610

Inventors:
Adolph, Ronning
Publication Date:
09/03/1940
View Patent Images:
Download PDF 2213610 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Adolph, Ronning
Primary Class:
416/247R
Other Classes:
74/612, 416/124, 416/93R, 416/93A, 416/189, 416/169R
International Classes:
B63H5/10; B63H5/16; B63H5/00