Title:
Device for lifting boats
United States Patent 2815131
Inventors:
Lunsman, John E.
Lunsman, Norman F.
Publication Date:
12/03/1957
Assignee:
LUNSMAN MFG COMPANY INC
Other Classes:
114/373, 269/130, 254/310, 269/296
International Classes:
B63B23/04; B63B23/00