Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Design Patent
2002-08-14
2003-08-26
Davis, Antoine Duval (Department: 2913)
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
Design Patent
active
D0478827
CLAIM:
The ornamental design for a laminar flow device, as shown and described.
REFERENCES:
patent: 3566922 (1971-03-01), Legg et al.
patent: 3642213 (1972-02-01), Parkison et al.
patent: 3851825 (1974-12-01), Parkison et al.
patent: 5672821 (1997-09-01), Suzuki
Bereskin & Parr
Crystal Fountains Inc.
Davis Antoine Duval
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