Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1982-03-11
1984-11-13
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
D14100, D10 46, D13 12
Patent
active
D02763206
REFERENCES:
patent: D233443 (1974-10-01), Lee
patent: D257719 (1980-12-01), Irion
patent: 4033206 (1977-07-01), Morita
patent: 4074350 (1978-02-01), Roch
patent: 4136390 (1979-01-01), Farrell
patent: 4393449 (1983-07-01), Takeda
Lighting Design & Application-7/81-p. 25-Energy Control Console at top-left.
Dr. Johannes Heidenhain GmbH
Holtje Nelson C.
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