Title:
DOOR HANGER AND TRACK CONSTRUCTION
Document Type and Number:
United States Patent 3425162

Inventors:
Halpern, Ernst
Publication Date:
02/04/1969
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Referenced by:
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Assignee:
WILLIAMSBURG STEEL PRODUCTS CO
Primary Class:
49/425
Other Classes:
49/409, 16/DIG.034, 16/105
International Classes:
E05D15/06; E05D15/06; E05D13/02
US Patent References:
1907144Door hanging equipment
2904848Unitary header construction
3105272Closure means for elevators
3339223Adjustable hanger for sliding doors
Foreign References:
FR724032A
GB990057A
CH293035A




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