Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1978-05-12
1980-07-15
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02558785
REFERENCES:
patent: D244586 (1977-06-01), Boord
patent: D244996 (1977-07-01), Martin
patent: 2882605 (1959-04-01), Frauenholtz
patent: 3045354 (1962-07-01), Frauenholtz
patent: 3122837 (1964-03-01), Wrona
Design News, 5/2/77, p. 77, Gauge at top-right.
Hamilton E. R.
Holtje Nelson C.
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