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Apparatus and method for increasing the efficiency of a door clo

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Apparatus for holding a door open

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Reexamination Certificate

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Arrangement for controlling an angularly movable member

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Reexamination Certificate

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Automatic checking mechanism

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Automatic door closer

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Automatic door closer

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Automatic door closer

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Automatic door closer and process for assembly of same

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Automatic door closer constructed for releasably holding a door

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Automatic door closing device

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Automatic door closing device

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Braking apparatus for door closer

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Control valve for door closer

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Reexamination Certificate

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Counterbalance mechanism

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Damper and method of controlling a door

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Damper apparatus

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Reexamination Certificate

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Damper device

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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Damper device

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Reexamination Certificate

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Damper for a pivot door

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Reexamination Certificate

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Damping device for hinges and the like

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent

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