Title:
Vacuum machine wall plug switch
United States Patent 3159727
US Patent References:
/0498550.html
- - 0498550
/1300286.html
- - 1300286
Combined switch-box and vacuum-line-seal mechanism for vacuum-cleaning systems
- - 1618667
Mail-box signal switch
- - 1744333
Signal device for mailboxes
- - 2424661
/0498550.html
- - 0498550
/1300286.html
- - 1300286
Combined switch-box and vacuum-line-seal mechanism for vacuum-cleaning systems
- - 1618667
Mail-box signal switch
- - 1744333
Signal device for mailboxes
- - 2424661
Inventors:
Steve, Boryfewycz
Publication Date:
12/01/1964
View Patent Images:
Export Citation:
Assignee:
JOHN E MITCHELL COMPANY INC
Primary Class:
International Classes:
A47L9/28; H01H3/16; H01R13/52