Title:
Automatic door operator
United States Patent 3087720
US Patent References:
Door operating mechanism
- - 2256613
Power operated window begulator
- - 2332731
Electric door operator with auxiliary operating means
- - 2504408
Engine starter
- - 2624424
Electric motor control for door operation
- - 2737621
Door operating mechanism
- - 2256613
Power operated window begulator
- - 2332731
Electric door operator with auxiliary operating means
- - 2504408
Engine starter
- - 2624424
Electric motor control for door operation
- - 2737621
Inventors:
Catlett, John C.
Publication Date:
04/30/1963
View Patent Images:
Export Citation:
Assignee:
ROTOR SWING DOOR CO INC
Primary Class:
Other Classes:
188/289, 16/62, 49/336
International Classes:
E05F15/12; E05F3/10; E05F3/00