Title:
Extension tower
United States Patent 1638611


Inventors:
Baldwin, William M.
Application Number:
US59888922A
Publication Date:
08/09/1927
Filing Date:
11/03/1922
Assignee:
J R MCCARDELL & CO
Primary Class:
Other Classes:
52/120, 105/238.1, 182/119
International Classes:
B66F11/04
View Patent Images: