Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Regulator or control
Patent
1984-06-20
1987-02-03
Zarfas, Louis S.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Regulator or control
Patent
active
D02880687
REFERENCES:
patent: D104885 (1937-06-01), Selje
patent: D191538 (1961-10-01), Keck et al.
patent: D197416 (1964-01-01), Hose
patent: D238583 (1976-01-01), Russell
patent: D266563 (1982-10-01), White
patent: 2129878 (1938-09-01), Sambur et al.
Pittway Corporation
Zarfas Louis S,.
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