Title:
Magnetic retractable door roller for automatic elevators
United States Patent 2996152


Inventors:
George, Olexson
Peter, Finn
Application Number:
US2043260A
Publication Date:
08/15/1961
Filing Date:
04/06/1960
Assignee:
George, Olexson
Peter, Finn
Primary Class:
International Classes:
B66B13/12
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