Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Element or attachment
Patent
1987-10-05
1990-09-25
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Element or attachment
Patent
active
D03107906
REFERENCES:
patent: D85727 (1931-12-01), Teague
patent: D93855 (1934-11-01), Suhr
patent: D94285 (1935-01-01), Side et al.
patent: D190097 (1961-04-01), Erbguth
patent: D233552 (1974-11-01), Schwartz
patent: 438541 (1890-10-01), Green
patent: 2920603 (1960-01-01), Burger
patent: 3142148 (1964-07-01), Morgan et al.
Davis Antoine D.
Holtje Nelson C.
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