Device for reading coded notches on keys

Details Device for reading coded notches on keys Device for reading coded notches on keys

1979-11-29

1981-08-25

Corbin, John K.

G02B 2702

Patent

active

042855748

ABSTRACT:
A device for reading coded notches on keys, the device comprising a magnifier having parallel lines marked on one face, the lines being spaced apart in accordance with the code and each line being indicated by a coding index, the magnifier having a groove for the reception of a key and an abutment to locate the key in a correct position relative to the lines.

REFERENCES:
patent: 660230 (1900-10-01), Treat
patent: 1726651 (1929-09-01), Coradi
patent: 2030013 (1936-02-01), Marshall
patent: 2189825 (1940-02-01), Waugh
patent: 3546778 (1970-12-01), Lepkowski
patent: 3546906 (1970-12-01), Yang

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