Keyless entry system

Details Keyless entry system Keyless entry system

1977-12-27

1980-05-27

Yusko, Donald J.

Communications: electrical

Digital comparator systems

340 63, 361172, 307 10R, H04Q 302, E05B 4702, H02G 300

Patent

active

042053250

ABSTRACT:
A keyless entry system for an automotive vehicle permits a plurality of operations to be achieved from outside the vehicle by one who is knowledgeable of predetermined digital codes. Functions such as unlocking the doors of the vehicle, opening the rear deck lid, opening a roof window, lowering the windows or programming the system with a user preferred digital access code are all performed by proper sequential operation of a digital keyboard mounted on the outside of the vehicle.

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patent: 3544804 (1970-12-01), Gaumer
patent: 3659154 (1972-04-01), Finn
patent: 3660729 (1972-05-01), James et al.
patent: 3691396 (1972-09-01), Hinrichs
patent: 3754213 (1973-08-01), Morroni
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patent: 3796889 (1974-03-01), Fradkin
patent: 3821704 (1974-06-01), Sabsay
patent: 3864578 (1975-02-01), Lackey
patent: 3969596 (1976-07-01), Siegel
patent: 4055772 (1977-10-01), Leung
patent: 4062056 (1977-12-01), Goodrich

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