Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1986-06-06
1989-10-31
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
D10 40, D10 57, D10 46
Patent
active
D03043118
REFERENCES:
patent: D246513 (1977-11-01), Garneau
patent: 3548780 (1970-12-01), Kliewer
patent: 3693579 (1972-09-01), Kliewer
patent: 3830191 (1974-08-01), Burke
patent: 4356790 (1982-11-01), Gee
patent: 4748931 (1988-06-01), Volk
Holtje Nelson C.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Schultz Leland D.
Sell Donald M.
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