Title:
Swingable vehicle attached ladder
United States Patent 2657940


Inventors:
Davidson, Frank M.
Application Number:
US16115350A
Publication Date:
11/03/1953
Filing Date:
05/10/1950
Assignee:
Davidson, Frank M.
Primary Class:
Other Classes:
105/326, 280/166
International Classes:
B60R3/02
View Patent Images:
US Patent References:
2487921Retractable step1949-11-15
2324507Ambulance step1943-07-20
2037805Retractable step for streamline railway cars1936-04-21
0686944N/A1901-11-19
0671767N/A1901-04-09
0666566N/A1901-01-22
Foreign References:
CH54402A1912-05-17
DE276377C
DE516683C1931-01-26