Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1989-01-31
1991-07-02
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
Patent
active
D03178820
REFERENCES:
patent: D276320 (1984-11-01), Thalmain
patent: D293557 (1988-01-01), Bartholoman et al.
patent: 3846701 (1974-11-01), Sampey
patent: 4084250 (1978-04-01), Albertine et al.
patent: 4658375 (1987-04-01), Onogi et al.
patent: 4685116 (1987-08-01), Toumayan
Davis Antoine D.
Holtje Nelson C.
Kearns Jerry T.
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