Multi-level lock system and method

Details Multi-level lock system and method Multi-level lock system and method

1980-03-19

1982-04-20

Wolfe, Robert L.

Locks

Operating mechanism

Key

70358, 70407, 70409, E05B 1902

Patent

active

043252427

ABSTRACT:
A key for use in a hierarchal lock system with an elongated body and selectively spaced notches cut on an elongated edge of the body. Two rows of discontinuous rib members are attached to each side of the elongated body of the key.

REFERENCES:
patent: 3777520 (1973-12-01), Crepinsek
patent: 4116025 (1978-09-01), Wolter
patent: 4213316 (1980-07-01), Tietz

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