Shanghhai One Top Corporation
Shanghhai One Top Corporation Patent applications | ||
Patent application number | Title | Published |
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20090218832 | Door Strike - A door strike comprising: a body; a retaining means for retaining a latch bolt, the retaining means being movable with respect to the body between a latch bolt retaining position and a latch bolt releasing position; a locking means for releasably locking the retaining means in the latch bolt retaining position; and detecting means for detecting removal of the body from a door frame. | 09-03-2009 |