1978-03-15
1979-11-20
Lake, Roy
Geometrical instruments
H01R 306
Patent
active
041748743
ABSTRACT:
An electric plug that has a retractable ground terminal in addition to the customary two terminals. Novel means is used for electrically connecting the three wires to the three terminals without the need of screws functioning as binding posts between the wires and the terminals.
REFERENCES:
patent: 2984808 (1961-05-01), Bender
patent: 2986718 (1961-05-01), Bender, Jr.
patent: 3685000 (1972-08-01), Robbins
Jones DeWalden W.
Lake Roy
Piper William R.
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