Geometrical instruments
Patent
1977-02-18
1978-04-04
Abrams, Neil
Geometrical instruments
339205, H01R 1718
Patent
active
040824098
ABSTRACT:
An electrical coupler and adapter is provided which is simple to make and can be used for coupling electrical plugs of the tip and ring type and of different sizes either for two-conductor circuits or three-conductor circuits.
REFERENCES:
patent: 2967901 (1961-01-01), Priaroggia
patent: 3321732 (1967-05-01), Forney, Jr.
patent: 3437982 (1969-04-01), O'Keefe et al.
Bailey James R.
Lavigne Vernon W.
Abrams Neil
Johnston Richard L.
Switchcraft Inc.
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