Magnetic retractable door roller for automatic elevators
United States Patent 2996152
US Patent References:
/1232903.html
- - 1232903
Means for opening and closing elevator cars and landing gates
- - 1876438
Method of and apparatus for operating the doors of elevator installations
- - 1911792
Elevator
- - 2307353
Door operator
- - 2899021
/1232903.html
- - 1232903
Means for opening and closing elevator cars and landing gates
- - 1876438
Method of and apparatus for operating the doors of elevator installations
- - 1911792
Elevator
- - 2307353
Door operator
- - 2899021
Inventors:
George, Olexson
Peter, Finn
Peter, Finn
Publication Date:
08/15/1961
View Patent Images:
Export Citation:
Assignee:
George, Olexson
Peter, Finn
Peter, Finn
Primary Class:
International Classes:
B66B13/12; B66B13/02