Revolving door safety system
United States Patent 3285209
US Patent References:
/1022684.html
- - 1022684

Burglar-lock
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Safety vestibule
- - 1558058

Revolving doorlock
- - 1952393


Inventors:
Thomas, Pace
Publication Date:
11/15/1966
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Assignee:
Thomas, Pace
Primary Class:
109/8
Other Classes:
49/42
International Classes:
E06B3/90