Combined clock and calendar

Details Combined clock and calendar Combined clock and calendar

1989-01-30

1991-10-08

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Clock or clock case

Combined

D10 15, D20 20, D19 21

Patent

active

D03205649

REFERENCES:
patent: D89744 (1933-05-01), Bourquin
patent: D104597 (1937-05-01), Duman
patent: D122892 (1940-10-01), Horsley
patent: D172674 (1954-07-01), Lux
patent: D221462 (1971-08-01), Rittinghaus
patent: D258811 (1981-04-01), You
patent: D275407 (1984-09-01), Smith
patent: D304960 (1989-12-01), Denton
patent: 3852953 (1974-12-01), Mischiatti
patent: 4681460 (1987-07-01), Nishimura
patent: 4780839 (1988-10-01), Hirayama

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