Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1989-03-28
1991-07-16
Dunkins, Bruce W.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03182436
REFERENCES:
patent: 612577 (1898-10-01), Smith
patent: 2356311 (1944-08-01), Beier
Davis Antonie D.
Dunkins Bruce W.
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