Measuring – testing – or signalling instruments – Clock or clock case – Simulative
Patent
1987-08-03
1991-11-26
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Simulative
D21160
Patent
active
D03218317
REFERENCES:
patent: D31630 (1899-10-01), Raczek
patent: D122804 (1940-10-01), Stone
patent: D124655 (1941-01-01), Moran
patent: D263639 (1982-03-01), Orenstein
patent: 2336185 (1943-12-01), Moran
patent: 2955752 (1960-10-01), Thomas
patent: 3835640 (1974-09-01), Hughes
patent: 4730284 (1988-03-01), Adams
Piarulli Frank
Piarulli Vinny
Gilden Leon
Holtje Nelson C.
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