Title:
Vacuum apparatus for water and dirt removal
United States Patent 2726807
Inventors:
Lewis, Russell K.
Publication Date:
12/13/1955
Assignee:
FINNELL SYSTEM INC
Other Classes:
261/119.100, 15/320, 55/319, 310/62, 310/60R, 15/50.100, 417/423.200
International Classes:
A47L7/00; A47L11/30; A47L11/29