Bell with lamp

Details Bell with lamp Bell with lamp

1985-05-08

1988-01-12

Kemper, Catherine E.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Aural, i.e., audible

Patent

active

D02936569

REFERENCES:
patent: D173826 (1955-01-01), Wiswell
patent: D192275 (1962-02-01), Herscovitz
patent: 2554627 (1951-05-01), Merola

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