Key in combination with a timer and emitter

Locks – Operating mechanism – Key

Patent

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Details

70408, E05B 1904

Patent

active

058327614

ABSTRACT:
A key, a timer and a signal emitter are integrally produced as one single item. The key with a timer and an emitter can facilitate a person to carry these items in one piece and make the use of the same with readiness.

REFERENCES:
patent: 3640108 (1972-02-01), Cairns
patent: 4276582 (1981-06-01), Burnett
patent: 4888970 (1989-12-01), Kinzler et al.
patent: 4901548 (1990-02-01), Deslandes
patent: 4922736 (1990-05-01), Tanaka et al.
patent: 5181927 (1993-01-01), Song
patent: 5309743 (1994-05-01), Kokubu et al.
patent: 5730013 (1998-03-01), Huang

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