Access control device for sequential displacement of a...

Details Access control device for sequential displacement of a... Access control device for sequential displacement of a...

E - Fixed Constructions

06

B

E06B 11/08 (2006.01)

Patent

CA 2267394

An access control device having at least two barrier means to permit entrance in one direction comprising a first barrier manually displaceable from a closed position to an open position and a second barrier manually displaceable from a closed position to an open position when said first barrier is being engaged to achieve said second open position wherein said first and second barriers are presented by said access control device in sequence.

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