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2. Mul-T-Lock - Wikipedia

   en.wikipedia.org/wiki/Mul-T-Lock

   Mul-T-Lock was established in 1973, with the invention of the 4-way lock. In 1976,Its marketing efforts expanded internationally in 1976. As the company experienced growth, it expanded its manufacturing facilities. [2] In 1987 Mul-T-Lock opened its first business unit in the United States and its second manufacturing plant in Israel. [3]

3. Three-point locking - Wikipedia

   en.wikipedia.org/wiki/Three-point_locking

   Three-point locking, or a multipoint lock, is a locking system installed in cabinet or locker doors to enable more secure locking. Whereas in single-point locking , the door on a cabinet locks only at the point where the key is turned, halfway up the edge of the door, three-point locking enables the top and bottom of the door to be ...

4. Smart lock - Wikipedia

   en.wikipedia.org/wiki/Smart_lock

   Through the management system, the administrator needs to set the user, unlock date and time period for the key. Whenever the user unlocks or locks the lock, the unlock record will be saved in the key. [5] The unlocking record can be tracked through the management software. Industry smart lock cylinder (passive electronic cylinder lock)

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   www.aol.com/walmarts-early-black-friday-sale...

   This huge Christmas inflatable can be yours for under $90 during Walmart's early Black Friday sale. $89.99 at Walmart (Save $110) More: On a budget? Shop Walmart's $7 Thanksgiving meal before it ...

6. Deadbolt - Wikipedia

   en.wikipedia.org/wiki/Deadbolt

   Some lock manufacturers also have a "lockable" knob: a key is always needed on one side (usually external), and a twist knob can be used on the other (internal), unless a button has been pressed, in which case a key is also needed on the internal side. [3] A variant of the standard deadbolt is the vertical deadbolt, invented by Samuel Segal.

7. Electronic lock - Wikipedia

   en.wikipedia.org/wiki/Electronic_lock

   Electric locks use magnets, solenoids, or motors to actuate the lock by either supplying or removing power. Operating the lock can be as simple as using a switch, for example an apartment intercom door release, or as complex as a biometric based access control system. There are two basic types of locks: "preventing mechanism" or operation ...