Measuring – testing – or signalling instruments – Clock or clock case – Combined
Patent
1977-10-31
1980-06-17
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Combined
D10 68, D1004
Patent
active
D02554313
REFERENCES:
patent: D236092 (1975-07-01), Macowski
patent: 3681052 (1975-01-01), Siegfried
Frater Grover A.
Holtje Nelson C.
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