Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1979-07-19
1981-05-05
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02591081
REFERENCES:
patent: D215757 (1969-10-01), Chang
patent: 1242722 (1917-10-01), Reilly
patent: 1458152 (1923-06-01), Schenck
Event Systems, Inc.
Holtje Nelson C.
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