Title:
DOOR SECTIONS HAVING UNITIZED HARDWARE
United States Patent 3511301

Inventors:
Graham, John R.
Malek, Walter K.
COMP ROBERT H
Substelny, Henry Z.
Publication Date:
05/12/1970
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Assignee:
GRAHAM DOOR CO
Primary Class:
160/209
Other Classes:
160/232, 160/235
International Classes:
E05D15/16; E05D15/24; E06B3/48; E05D1/04; E06B3/32; E05D1/00; E05D5/08; E05D15/16
US Patent References:
2952314Doors formed of sections hinged together and guided for vertical movement
2968829Hinge with arcuate plastic hinge connector
3198242Upwardly acting door and seal means therefor
3221465Sectional overhead door
3347305Door construction
3415304Overhead door




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