Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Regulator or control
Patent
1984-06-04
1987-03-10
Zarfas, Louis S.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Regulator or control
D10 60
Patent
active
D02886707
REFERENCES:
patent: D136848 (1943-12-01), Dreyfuss
patent: D142543 (1945-10-01), Bechtell
patent: D215245 (1969-09-01), Schwab
patent: D248838 (1978-08-01), Pasquarette et al.
patent: D276731 (1984-12-01), Steiner
patent: 1860986 (1932-05-01), Boyce
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