Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Design Patent
2001-03-31
2002-05-14
Davis, Antoine Duval (Department: 2913)
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
Design Patent
active
D0457083
CLAIM:
The ornamental design for a low flow rotameter, as shown and described.
REFERENCES:
patent: 4102187 (1978-07-01), Williams
patent: 4523480 (1985-06-01), Imoue
patent: 5911219 (1999-06-01), Aylsworth et al.
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