Combined digital clock and letter opener

Details Combined digital clock and letter opener Combined digital clock and letter opener

1991-10-30

1993-07-13

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Clock or clock case

Combined

D10 15, D 8102, D 8104, D19 65

Patent

active

D03372766

REFERENCES:
patent: D249245 (1978-09-01), Henkels
patent: D270623 (1983-09-01), Henkels
patent: D277556 (1985-02-01), Pappas
patent: D283202 (1986-04-01), Sugarman et al.
patent: D290958 (1987-07-01), Kawata et al.
patent: D304018 (1989-10-01), Nomizu
patent: D304131 (1989-10-01), Tanigami
patent: D310105 (1990-08-01), Murphy et al.
patent: D311141 (1990-10-01), Murata
patent: D318999 (1991-08-01), Tanigami
patent: 3845614 (1974-11-01), Christ

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