Measuring – testing – or signalling instruments – Clock or clock case – Case having geometric configuration in front elevation
Patent
1988-05-18
1991-06-04
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Case having geometric configuration in front elevation
D10 6, D10 28
Patent
active
D03172635
REFERENCES:
patent: D37411 (1905-04-01), McGraw
patent: D185991 (1959-08-01), Loewy
patent: 1953437 (1933-09-01), Drake
patent: 2642713 (1953-06-01), Prins
patent: 2749704 (1956-06-01), Heikkila
patent: 4218875 (1980-08-01), Rothman
Hong Kong Enterprise, 7/88, p. 25--Ball Clocks.
Jeweler's Circular Keystone--5/65, p. 86--Clock at top.
Holtje Nelson C.
International Precision Products, Inc.
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