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US5005881A
|
|
Door locking mechanism
|
|
US4915431A
|
|
Electromagnetic lock having a self-adjusting switch assembly for door-movement alert
|
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US4161804A
|
|
Heat-actuated door latch
|
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US4069544A
|
|
Electrically actuated door holder and release
|
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US4072917A
|
|
Switch actuating hinge
|
|
US3982237A
|
|
Combination door chime and particulate products of combustion detector
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|
US3968379A
|
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Photocell smoke detector
|
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US3926461A
|
|
Electrically actuated door holder and release
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CA1032564A
|
|
Particulate products of combustion detector for closer frame
|
|
CA991662A
|
|
Condition responsive door holder-closer
|
|
US3908309A
|
|
Particulate products of combustion detector for closure frame
|
|
US3857625A
|
|
Electrical connector hinge
|
|
US3905063A
|
|
Condition responsive door holder-closer
|
|
CA944398A
|
|
Protective barrier for products of combustion
|
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CA944399A
|
|
Protective barrier for products of combustion
|
|
CA939960A
|
|
Closure operator
|
|
CA940161A
|
|
Protective barrier for products of combustion
|
|
CA944212A
|
|
Closure operator
|
|
US3729771A
|
|
Latching lever assembly for door holder-closer
|
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GB1336499A
|
|
Electromechanical door holder-closer
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