Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Weight – force or density
Patent
1993-01-19
1994-10-04
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Weight, force or density
Patent
active
D03511138
REFERENCES:
patent: D247957 (1978-05-01), Adams
patent: D289505 (1987-04-01), Faulconer
patent: 4400977 (1983-08-01), Gross et al.
patent: 4466283 (1984-08-01), Ostechout
Bethel George F.
Bethel Patience K.
Davis Antoine D.
Holtje Nelson C.
U.S. Divers Co., Inc.
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