Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Regulator or control
Patent
1979-06-25
1982-05-18
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Regulator or control
D1004
Patent
active
D02644460
REFERENCES:
patent: D159016 (1950-06-01), Strand
patent: D202897 (1965-11-01), Huffman
patent: D220042 (1971-03-01), Rinaldi
patent: D225453 (1972-12-01), Hill
patent: D238583 (1976-01-01), Russell
patent: D248017 (1978-05-01), Boldt
patent: D253044 (1979-10-01), Hewson
Drutz Alvin S.
McKinnon Eugene T.
Cislo Donald M.
Holtje Nelson C.
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