Combined analog and digital wristwatch

Details Combined analog and digital wristwatch Combined analog and digital wristwatch

1988-08-05

1991-05-21

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Watch, wristwatch or case

Wrist type

Patent

active

D03169839

REFERENCES:
patent: D278688 (1985-05-01), Giugiano
patent: D283985 (1986-05-01), Sakamaki
patent: D285662 (1986-09-01), Kano
patent: D288668 (1987-03-01), Flury
patent: D311342 (1990-10-01), Houlihan
patent: 2763122 (1956-09-01), Hayes
patent: 4352168 (1982-09-01), Anderson
patent: 4694410 (1987-09-01), Murata
patent: 4783772 (1988-11-01), Umemoto et al.

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