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Home › Dual lock with simultaneous retraction of latch and deadbolt by inside lever and uncoulpler between driving spindle and the lever

Dual lock with simultaneous retraction of latch and deadbolt by inside lever and uncoulpler between driving spindle and the lever

US Patent 5657653 · Granted Aug 19, 1997

Estimated economic value: $14,081,000 ⓘ

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