Card for a pledge lock

Details Card for a pledge lock Card for a pledge lock

1994-06-06

1996-05-07

Hajec, Donald T.

Locks

Operating mechanism

Using a powered device

70413, 235382, 235493, G06K 500

Patent

active

055135072

ABSTRACT:
The invention relates to a card for a pledge lock, more particularly of a shopping or luggage trolley, wherein the lock can be magnetically actuated by the card.

REFERENCES:
patent: 3465131 (1969-09-01), Eyck
patent: 3508031 (1970-04-01), Cooper, Jr.
patent: 3761683 (1973-09-01), Rogers
patent: 4077242 (1978-03-01), Sedley
patent: 4692604 (1987-09-01), Billings
patent: 4766989 (1988-08-01), Maloeuvre et al.
patent: 5032709 (1991-07-01), Lee et al.
patent: 5069324 (1991-12-01), Lapage et al.
patent: 5361871 (1994-11-01), Gupta et al.

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