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Door assembly with multiple torque rod counterbalancing

Movable or removable closures – With means mounting closure for swinging – With biasing means
Patent

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Door barricade system

Movable or removable closures – With means mounting closure for swinging – With latch or lock
Patent

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Door bearing and door assembly

Movable or removable closures – With means mounting closure for swinging – Hinging position reversal means
Patent

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Door closer

Movable or removable closures – With means mounting closure for swinging – With biasing means
Patent

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Door closer having means to neutralize the door closing force ex

Movable or removable closures – With means mounting closure for swinging – With biasing means
Patent

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Door closure

Movable or removable closures – With means mounting closure for swinging – With biasing means
Patent

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Door closure

Movable or removable closures – With means mounting closure for swinging – With biasing means
Patent

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Door construction

Movable or removable closures – With means mounting closure for swinging – With latch or lock
Patent

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Door construction

Movable or removable closures – With means mounting closure for swinging – With latch or lock
Patent

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Door construction

Movable or removable closures – With means mounting closure for swinging – With biasing means
Patent

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Door control mechanism

Movable or removable closures – With means mounting closure for swinging
Patent

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Door edge and hinge guard

Movable or removable closures – With means mounting closure for swinging – Hinge edge – finger guard – lock or disparate seal
Patent

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Door fitting device capable of adjusting axis of rotation and to

Movable or removable closures – With means mounting closure for swinging – With biasing means
Patent

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Door for a mine stopping having knife-edge hinges

Movable or removable closures – With means mounting closure for swinging – Pivots on opposed portal members
Patent

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Door frame and door assembly for a mine stopping

Movable or removable closures – With means mounting closure for swinging – Closure overlies portal frame
Patent

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Door frame closing and securing apparatus

Movable or removable closures – With means mounting closure for swinging – With latch or lock
Reexamination Certificate

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Door gap finger guard

Movable or removable closures – With means mounting closure for swinging – Hinge edge – finger guard – lock or disparate seal
Reexamination Certificate

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Door having a frame in which a sliding piece is mounted

Movable or removable closures – With means mounting closure for swinging – Pivots on opposed portal members
Patent

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Door having hidden screw construction

Movable or removable closures – With means mounting closure for swinging – Closure nests within portal frame
Patent

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Door hinges

Movable or removable closures – With means mounting closure for swinging – Hinge leaf mounted on closure edge surface
Patent

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