Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1985-10-11
1988-07-05
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
D23259
Patent
active
D02965305
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patent: 3626755 (1971-12-01), Rudolph
patent: 3960142 (1976-06-01), Elliott
patent: 4481828 (1984-11-01), Cheng
patent: 4558710 (1985-12-01), Eichler
Brisson Alfred G.
Nowacki Christopher
Holtje Nelson C.
Trutek Research Inc.
Wolters Robert M.
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