Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1977-05-17
1979-06-19
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02521377
REFERENCES:
patent: D113527 (1937-02-01), Bauberger
patent: 1198258 (1916-09-01), Naylor
Hewson Donald E.
Holtje Nelson C.
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