Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1986-07-25
1989-01-10
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
D10103
Patent
active
D02993180
REFERENCES:
patent: D214755 (1965-07-01), McPhee
patent: D222138 (1971-10-01), Palmer
patent: D243717 (1977-03-01), Edmark
patent: D266270 (1982-09-01), Sugawara
patent: D287473 (1986-12-01), Ueno
patent: 2476115 (1949-07-01), Runbaken
patent: 2536577 (1951-01-01), Simmons
patent: 2809347 (1957-10-01), Bueter
patent: 2901692 (1959-08-01), Polhemus
patent: 3822598 (1974-07-01), Brothers
Holtje Nelson C.
Leavitt John J.
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