Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1977-04-13
1980-06-03
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
D1006
Patent
active
D02552264
REFERENCES:
patent: 1753364 (1930-04-01), Corcoran
patent: 3136289 (1964-06-01), Johnson
patent: 3304037 (1967-02-01), Candela
patent: 3786778 (1974-01-01), Palmer et al.
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