Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Regulator or control
Patent
1980-05-27
1982-11-30
Spangler, Robert C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Regulator or control
D1004
Patent
active
D02670798
REFERENCES:
patent: D203945 (1966-03-01), Them
patent: D237867 (1975-12-01), Manecke
patent: D238414 (1976-01-01), Stearley
patent: D242230 (1976-11-01), Manecke et al.
patent: 3995245 (1976-11-01), Manecke et al.
Shenandoah Manufacturing Co. Inc.
Spangler Robert C.
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