Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1986-04-14
1989-01-10
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D02993171
REFERENCES:
patent: 1605604 (1926-11-01), Nerbon
patent: 1820365 (1931-08-01), Ries
patent: 2551524 (1951-05-01), Bullivant
Gernstein Terry M.
Holtje Nelson C.
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