Title:
Automatic door opening and closing apparatus
United States Patent 3154302
US Patent References:
Door-control apparatus
- - 1594706

Driving mechanism for valves
- - 2086030


Inventors:
Kunimori, Maruyama
Publication Date:
10/27/1964
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Assignee:
Kunimori, Maruyama
Primary Class:
49/280
Other Classes:
74/415, 475/154
International Classes:
E05F15/12