Measuring – testing – or signalling instruments – Time-measuring instrument or casing
Patent
1984-02-14
1986-09-02
Zarfas, Louis S.
Measuring, testing, or signalling instruments
Time-measuring instrument or casing
D 3 76
Patent
active
D02854210
REFERENCES:
patent: D152246 (1949-01-01), Federico
patent: D152626 (1949-02-01), Lauricella
patent: D220007 (1971-02-01), Donovan et al.
patent: D279173 (1985-06-01), Ketcham
patent: 2768348 (1956-10-01), Grumet et al.
patent: 3723675 (1973-03-01), Richey
patent: 4350953 (1982-09-01), Best et al.
Electromagnetic Technology, Inc.
Zarfas Louis S,.
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