Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1978-04-13
1980-07-08
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D18 9, D1004
Patent
active
D02557843
REFERENCES:
patent: D201300 (1965-06-01), Seely
patent: D249531 (1978-09-01), Neufeld
patent: 1248897 (1917-12-01), Ossman
patent: 1631731 (1927-06-01), Johnson
patent: 2746682 (1956-05-01), Zak
patent: 2903795 (1959-09-01), Wilfert
patent: 3522655 (1970-08-01), Kilpatrick
Hobbs Marmaduke A.
Holtje Nelson C.
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