Measuring – testing – or signalling instruments – Time-measuring instrument or casing – Metronome
Patent
1992-12-29
1994-10-25
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Time-measuring instrument or casing
Metronome
Patent
active
D03518000
REFERENCES:
patent: D295728 (1988-05-01), Berry
patent: D315518 (1991-03-01), Saito
patent: D319791 (1991-09-01), Saito
patent: 4193257 (1980-03-01), Watkins
patent: 4303398 (1981-12-01), Yoseloff
patent: 4583443 (1986-04-01), Senghaas
patent: 4733593 (1988-03-01), Rothbart
Bednarek Michael D.
Holtje Nelson C.
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