Sports clock

Details Sports clock Sports clock

1986-04-18

1989-08-15

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Clock or clock case

Simulative

D10 2, D10 6

Patent

active

D03027961

REFERENCES:
patent: D207960 (1967-06-01), Payne
patent: D233453 (1974-10-01), Huffman
patent: D237518 (1975-11-01), Norgaard
patent: D241521 (1976-09-01), O'Brien
patent: D266436 (1982-10-01), Smith
patent: D275967 (1984-10-01), Morano
patent: 1990809 (1935-02-01), Wright
patent: 2528938 (1950-11-01), Wolf

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