Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1992-03-03
1994-02-08
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
Patent
active
D03440311
REFERENCES:
patent: D293655 (1988-01-01), Phillips et al.
patent: D294230 (1988-02-01), Phillips et al.
patent: 3842671 (1974-10-01), Frizelle
patent: 4559834 (1985-12-01), Phillips et al.
patent: 5078004 (1992-01-01), Nyseth
Frick Donald C.
Tessarvich Wayne D.
Davis Antoine D.
Douglas Alan P.
Weinstein Louis
World Wide Plastics, Inc.
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